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Press Kits

2007 LEXUS LS460 PRESS KIT

  1. LEXUS LAUNCHES ALL-NEW FLAGSHIP LS460
  2. A WORD FROM THE LS460 CHIEF ENGINEER
  3. LEXUS LS460 WINS WORLD CAR OF THE YEAR AWARD
  4. TECHNOLOGY JOINS EXPERIENCE AND CRAFTSMANSHIP
  5. MASTER CRAFTSMEN REDEFINE EXCELLENCE
  6. LEXUS BRINGS NEW IMPETUS TO UPPER LUXURY MARKET
  7. LEXUS LS460 PRICE CONFIRMS VALUE STANDARD
  8. LS460 IS FIRST OF LS LINE FLAGSHIPS
  9. LEXUS IDENTIFIES NEW MARKET FOR UPPER LUXURY SEGMENT
  10. LS460 A STAR PERFORMER
  11. LS460 HAS 4.6-LITRE V8 ENGINE
  12. LS460 HAS EIGHT-SPEED AUTOMATIC TRANSMISSION
  13. LS460 D-4S FUEL INJECTION SYSTEM SHOWS THE WAY
  14. LS460 DUAL VVT-i COMES WITH WORLD-FIRST VVT-iE
  15. LS460 - IT DOESN'T GET MUCH QUIETER
  16. INTELLIGENT POWERTRAIN CONTROL SYSTEM FOR LS460
  17. LS460 GEAR TRAIN AND HYDRAULIC CONTROL OPTIMISE TORQUE
  18. LS460 CONSTRUCTION AND PRECISION ASSEMBLY
  19. LS460 SEMI-DUAL EXHAUST MANIFOLD
  20. LS460 DUAL-PIPE AIR INTAKE SYSTEM
  21. LS460 EPS WITH VARIABLE GEAR RATIO STEERING
  22. LS460 POWER CONTROL ECU
  23. LS460 DESIGN AND REFINEMENT
  24. LS460 EXTERIOR DESIGN HIGHLIGHTS
  25. LS460 FEATURES BRAND NEW PLATFORM AND BODY SHELL
  26. LS460 HAS OUTSTANDING AERODYNAMICS
  27. LS460 FEATURES MULTI-LINK AIR SUSPENSION
  28. LS460 PRECISION MANUFACTURING AND DESIGN
  29. LS460 PAINT TECHNOLOGY AND HAND-POLISHING
  30. LS460 TOTAL DRIVING INSPECTION
  31. LS460 INTERIOR DESIGN HIGHLIGHTS
  32. LS460 HAS FOUR-ZONE AIR CONDITIONING
  33. LS460 HAS SMART KEYLESS ENTRY
  34. LS460 HAS ALL-DOOR AUTOMATIC OPERATION
  35. LS460 HAS HIGHEST-QUALITY SEATING
  36. LS460 HAS STATE-OF-THE-ART MARK LEVINSON AUDIO
  37. LS460 OFFERS ADVANCED REAR SEATING EXPERIENCE
  38. LS460 HAS PRE-COLLISION SAFETY SYSTEM
  39. LS460 ACTIVE SAFETY
  40. LS460 BRAKE HOLD
  41. LS460 PASSIVE SAFETY
  42. LS460 HAS ELECTRO-HYDRAULIC BRAKING SYSTEM
  43. LS460 ANTI-THEFT SECURITY
  44. LS460 TECHNICAL SPECIFICATIONS
  45. LS460 TECHNICAL GLOSSARY

LEXUS LAUNCHES ALL-NEW FLAGSHIP LS460


The first of the new pinnacle vehicles of the luxury Lexus marque, LS460, will be made available in Australia on 1 May.

The all-new LS460 is the fourth generation of the original LS400 vehicle released in Australia in 1990.

Lexus has undertaken a back-to-the-source evaluation of its manufacturing and engineering techniques and has designed LS460 to even higher standards.

LS460 is a different vehicle from its predecessor in many of its major components.

There are no carry-overs in the major areas of chassis, suspension, engine or driveline.

LS460 for Australia will include the world's first eight-speed automatic transmission. LS460 also includes a number of category and Lexus firsts.

The new vehicle epitomises the styling concept known as L-Finesse, shown for the first time on the GS Line and then on the IS Line.

It is anticipated that Lexus LS460 will comprise less than five per cent of total Lexus sales in Australia.

"LS400 series has led Lexus since its inception," Lexus divisional manager John Roca said.

"It was the first Lexus launched in the world, in 1989, and it was responsible for a comprehensive overhaul of the upper luxury market, especially amongst the long-standing European brands.

"Lexus is the most accomplished luxury start-up brand of recent times.

"It competes strongly now in the most discerning automotive market of all."

Lexus has delivered more than 43,000 vehicles in Australia, with LS400 consisting of more than 3100 of those deliveries.

"The highest sales of LS400 series in any year have been just over 400, which is entirely consistent with demand for the vehicle's competitors," Mr Roca said.

"LS460 is not intended to be a high-volume vehicle.

"Like the flagships of all luxury ranges, it is an exclusive vehicle, to be appreciated by a fortunate few.

"Its influence throughout the Lexus range is undeniable and of benefit to all Lexus owners."

In 2006 Lexus delivered 7163 vehicles, in 2005 it was 6005 and in 2004 Lexus registered 5009 vehicles.

Deliveries this year have been buoyed by spectacular acceptance of the new IS250 series.

Lexus Australia delivered 3381 IS250 series in 2006 - an all-time volume record for any Lexus sedan, eclipsed only by initial take-up of the bestselling RX Line SUV.

Lexus sells six models in Australia, made up of 13 variants, through 22 exclusive dealerships.

Lexus has built around 900,000 of its LS400 series since 1989, comprising just less than one quarter of total Lexus vehicles, which are now approaching four million in worldwide use.

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A WORD FROM THE LS460 CHIEF ENGINEER


When I took the challenge to develop the new Lexus LS, my main objective was to accelerate automotive evolution with clear customer benefits, as we did with the first LS - a car that laid the foundations for our marque.

With new LS we are responding to a new type of customer for whom outspoken luxury is no longer sufficient in itself. As a responsible individual, this customer wants to drive a car on the leading edge of automotive development in terms of safety and environmental technology.

New LS is a showcase of the engineering capabilities of the Lexus marque. For this fourth generation, starting with a clean sheet of paper, my development team questioned all the engineering basics - with the result that platform, engine, body and interior are completely new.

Finally, new LS is the product of a completely revised production system that harmoniously merges technology that is unique in the automotive industry, with the skills of highly experienced master craftsmen.

With new LS, Lexus reveals its strength, transforming leading automotive technology and superior production know-how into tangible benefits for the driver, elevating the pleasure of driving.

MORITAKA YOSHIDA
CHIEF ENGINEER OF THE NEW LEXUS LS

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LEXUS LS460 WINS WORLD CAR OF THE YEAR AWARD


The flagship Lexus LS460 has been named the world's best car for 2007, winning the prestigious World Car of the Year (WCOTY) award announced at the 2007 New York Motor Show.

The World Car of the Year awards are recognised as the pinnacle of automotive awards, with each vehicle judged by a panel of 44 automotive journalists from 22 countries.

Due for its Australian launch in May, all-new LS460 was chosen by the WCOTY jurors as it embodied the Lexus brand's "Pursuit of Perfection".

Jurors also recognised that "Lexus continues to build its reputation with this luxury flagship with many firsts", including the world's first eight-speed automatic transmission.

LS460 was also chosen from an initial entry list of 28 vehicles, for its "unquestionable quality" and "classically luxurious" design with "modern execution".

Vehicles are judged on their style, performance, comfort, utility, value, safety and environmental responsibility.

In winning the 2007 award, LS460 bested vehicles from rival marques including Mercedes, Audi and Jaguar.

Lexus divisional manager John Roca said that a no-compromise approach to designing and building vehicles is what sets Lexus apart from its rivals.

"Lexus is committed to designing the world's best vehicles. The World Car of the Year award for LS460 is evidence of that commitment," Mr Roca said.

"The LS range is the pinnacle of the Lexus brand. LS460 claiming the award so early in the vehicle's life reinforces our position as an industry leader.

"The arrival of LS460 in Australia in May will set new standards in luxury motoring for Lexus owners."

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TECHNOLOGY JOINS EXPERIENCE AND CRAFTSMANSHIP




The most significant mark of Chief Engineer Moritaka Yoshida in the new LS460 is his obsession for perfection.

Involved in the Lexus marque since its very inception, Mr Yoshida began his career as a chassis engineer, participating in the development of the first LS400.

He subsequently moved to the Product Planning Division, sharing responsibility for the development of the second-generation Lexus GS and the current LS430.

With 23 years devoted to the development of Lexus cars, Mr Yoshida is fully conversant with the ethos of the 'pursuit of perfection' and the unique mindset which is the hallmark all Lexus engineers.

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MASTER CRAFTSMEN REDEFINE EXCELLENCE


An elite team of master craftsmen or takumi has redefined the global standards of excellence in producing the Lexus flagship LS460.

The use of takumi is based on the belief there are things - like the smoothness of an accelerator or the beauty of the body - that cannot be measured in numbers.

Drawing on their years of experience and unique artistry, they seek perfection in the smallest details of the new car.

The takumi add refined touches that scientific precision alone cannot provide.

It is a tradition that is rooted deeply in Japanese culture.

Over the centuries, takumi have been largely responsible for Japan's unique, highly advanced manufacturing culture.

At the Lexus Tahara plant in Aichi, Japan - the birthplace of the LS460 - the takumi are present in every stage of the production process.

The master craftsman responsible for vehicle assembly, Shigeaki Nojiri, said the art of production involved both the Lexus technology edge and the years of experience and finely honed senses of experts.

The impact of the takumi is evident everywhere, including the sanitised room where the 4.6-litre V8 engine - the heart of the LS - is painstakingly assembled.

Osamu Fujita, the master craftsman in charge, personally fires up assembled engines on a test bench.

Fujita runs it under light load conditions and listens intently with a stethoscope to detect even faint variations in sound.

When he discovers an off-key note, he makes minor adjustments. Later, cars coming off the line are driven by experts to ensure the engine produces precisely the right sound and feel.

"One thing that differentiates the LS460 engine from its predecessors is the beautiful sound it achieves," Fujita said.

"While prior LS engines were rightly valued for their quiet running, this time we strove to go further and create an engine that is powerful, yet melodious in its tranquillity," he said.

The safety, handling and overall reliability that define Lexus excellence are also the result of takumi skills.

Their expertise is essential with the distinctive high-end design of the LS, shaped by L-finesse.

Masahide Sakato, responsible for the body press line, subjects the car to a wide range of tests to ensure it meets the uncompromising standards set by the designers.

Computers compare the car's digital measurements against the designers' CAD images.

Sakato then uses a specially made light tunnel to examine the surface flow over the entire body.

The takumi influence on paint and finish begins with the redesign of the production line robots to mimic precisely the movements of a craftsman's hands.

This gives the mechanical process a human nuance and brings it closer to takumi techniques.

Chikao Kawamura, who specialises in paint application and finishing techniques, inspects the exterior under a range of different conditions to ensure it is free of even the smallest imperfection.

"Only by joining the finely honed skills of our master craftsmen with the world's most advanced production technologies can we create a vehicle that achieves an unmatched degree of perfection," Kawamura said.

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LEXUS BRINGS NEW IMPETUS TO UPPER LUXURY MARKET


Pent-up demand for Lexus LS Line will drive the vehicle into strong contention in the exclusive upper luxury market - identified as vehicles worth over $100,000 within the upper large segment.

Lexus reduced the supply of the LS Line in 2006 after it was decided to wait for the development of Lexus' unique air suspension for the launch of the LS460 to the local market.

This decision sent a strong message to competitors and customers that Lexus would not compromise on offering the best.

"The decision to further increase the specification of the Australian vehicle in 2006 was made to keep faith with our clients and to stay true to our own covenant of the pursuit of perfection," Lexus divisional manager John Roca said.

"The vehicle launch timing was revised while Lexus' new air suspension was developed for Australian conditions and fitted.

"The loyalty of Lexus owners is exceptional in the industry; we saw some customers move to other Lexus vehicles, while others simply decided to wait for the new vehicle."

Lexus has delivered 3189 LS Line vehicles in Australia since 1990, an average of 187 each year.

"The upper luxury market is very small and very exclusive," Mr Roca said.

Lexus regards the upper luxury segment as the appropriate position for its flagship line.

Lexus has now delivered more than 43,000 vehicles in Australia, of which less than eight per cent have been LS Line.

This year, the ratio is likely to be even more exclusive.

As the Lexus franchise continues to mature and expand, the relative volume of the LS Line will reduce, but still play a vitally important part in Lexus' future.

"It is totally appropriate that LS Line, like all the vehicles in its class, should be available to an exclusive and fortunate few," Mr Roca said.

"Lexus has earned the right to participate in a market which last year comprised just seven other marques: Audi, Bentley, BMW, Jaguar, Maybach, Mercedes-Benz and Rolls-Royce.

"It is an inspiration to all Lexus owners that LS Line is so well regarded at the pinnacle of the market."

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LEXUS LS460 PRICE CONFIRMS VALUE STANDARD


The new Lexus LS460 sedan will be offered at a price that sets a new benchmark in luxury, style and value for money.

Lexus LS460's recommended retail price (RRP) will be $184,900*.

The vehicle comes fully equipped, without the need for any options.

Its recommended retail price is between $19,600 and $69,000 beneath that of comparable competitors' models based on power and specification.

"In effect, LS Line maintains a considerable value advantage over similarly powered versions of its upper luxury peers," Lexus divisional manager John Roca said.

"At launch some 17 years ago, the LS Line established a similar value equation."

LS460's RRP is very close to the entry level vehicles of the two leading upper luxury participants.

One, powered by a 3.5-litre V6 developing 200kW and 350Nm, carries a recommended retail price of $187,900 - $3000 more than LS460.

The other, with a four-litre V8 developing 225kW and 390Nm, has a recommended retail price of $183,000, just one per cent less than the highly specified LS460.

Based on power and specification alone, LS460 surpasses these competitors' entry-level vehicles to compete directly with their higher specified variants.

"These vehicles are priced above $200,000, and one is above $250,000," Mr Roca said.

"Dedicated Lexus owners very much appreciate the value in their purchase decision."

Lexus LS460 comes to market with premium leather seating with built-in air conditioning and heating, a 19-speaker Mark Levinson Dolby Digital Surround Sound system, eight-speed automatic transmission, four-zone climate control and Smart Entry System - all as standard.

*Recommended retail price (RRP), unless stated otherwise, excludes dealer delivery and statutory charges.

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LS460 IS FIRST OF LS LINE FLAGSHIPS


The Lexus LS460 is the first of a two-part launch of the luxury brand's new LS Line flagship models.

Lexus LS460 will be followed later in 2007 by Lexus LS600hL - the world's first V8 hybrid and Lexus' first long-wheelbase limousine.

The two models are expected to lead Lexus to record customer demand.

The LS Line is completely new in chassis, drive train and styling.

It is the fourth generation of the LS Line which announced Lexus to the world in 1989.

Lexus LS460 introduces the world's first eight-speed automatic transmission in a production vehicle.

It is the most powerful vehicle under $200,000 in the upper large segment over $100,000 or upper luxury vehicle market.

LS460 develops 280kW of power and 493Nm of torque.

It features all-new styling in accordance with the Lexus design philosophy of L-Finesse.

The LS now headlines the distinctive Lexus look, epitomised already by the IS and GS Lines.

Significant upgrades include an all-new air suspension system.

The flagship LS Line explores occupant comforts, including semi-aniline premium leather and the introduction of climate control rear seats.

Safety breakthroughs include the use of rear seat side airbags for the first time in the LS Line.

Lexus LS460 is equipped with VDiM, a top-end driver assist system designed to maintain vehicle control.

The LS460 is being launched into the most active upper luxury market for many years.

Value for money will play a major role in the LS460 claiming an increased share in the segment.

"Equipment, ambience and occupant comfort are major drivers in the very specialised upper luxury segment," Lexus divisional manager John Roca said.

"Ownership decisions are determined not directly by price, but by reactions to the value proposition.

"Lexus' advantage is that its equipment levels are complete, without the need to resort to an extensive and expensive options list.

"LS Line has created the value benchmark since its inception, and it continues to do so with this new model."

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LEXUS IDENTIFIES NEW MARKET FOR UPPER LUXURY SEGMENT


Lexus has identified a newly emerging group of chief executives and owners of small and medium enterprise (SME) businesses who are prime candidates to join the upper luxury car market - many for the first time.

They come from the middle to younger end of the Baby Boomer generation, and they are in the main the most successful of the Boomers.

They comprise a mixture of entrepreneurs, creatives and corporate professionals.

Lexus describes these people as the New Influential NEOs.

NEO is a term adopted two years ago by Lexus and means New Economic Order.

It has become an accepted means of defining the fast-changing demographics of modern society.

It has been very useful in creating the foundation for communication with potential buyers of Lexus GS and IS Line vehicles.

The launch of LS460 has given Lexus the opportunity to refine the NEO concept to the upper luxury segment.

Lexus will undertake discrete communication with both chief executives and owners of their own SMEs, all of them business leaders.

"Our customers and potential customers share a common desire to be low-key about wealth," Lexus divisional manager John Roca said.

"They refer to their achievements rather than their wealth itself.

"Although they admit to a strong work ethic, they are less prepared to talk about drive and ambition.

"They do not value technology for its own sake but see it as an enabling tool in their daily lives - particularly in reference to time management, which is a priority."

The average age of a chief executive listed on the ASX is now more than four years younger than that of a purchaser of an upper luxury vehicle.

According to the ASX, the average age of CEOs of its member companies is 51.

And according to Canadian research the average age of an owner of an SME business is 48.

The average age of buyers of upper luxury vehicles from Lexus, BMW, Mercedes-Benz, Audi and Jaguar is 55.

"Clearly, opportunity exists to begin a conversation with the new breed of business leaders," Mr Roca said.

"Although prestige is a driving force, increasingly this very discerning group values experiences.

"They value those things in life which enrich their experience.

"They appreciate modern design and like to be ahead of the curve."

Mr Roca said in many instances potential purchasers of the new LS line will already be driving a vehicle from the GS or IS Line.

"The step up is logical, and affordable," he said.

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LS460 A STAR PERFORMER


Lexus LS460 has an all-new 4608cc V8 power plant, which develops 280kW at 6400rpm, and maximum torque of 493Nm at 4100rpm.

It is matched to a unique eight-speed automatic transmission.

LS460 develops 107Nm/litre and accelerates from 0-100km/h in only 5.7 seconds.

It has standing 400m acceleration time of 13.8 seconds and a top speed of 250km/h (electronically limited).

LS460 combines this performance with ADR 81/01 fuel economy of 11.1 litres/100km* in the combined cycle and a CO2 emissions figure of 261g/km*.

The eight-speed gearbox, with its wide spread of gear ratios, allows the 4.6-litre Lexus to deliver class-leading fuel efficiency versus its direct V8 competitors above a 4.0-litre capacity.

*Fuel consumption and emissions will vary depending on driving conditions/style, vehicle conditions and options/accessories.

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LS460 HAS 4.6-LITRE V8 ENGINE


LS460's all new 1UR-FSE engine is the most technologically advanced internal combustion engine Lexus has developed.

It delivers 35 per cent more power than the 4.3-litre 3UZ-FE it supersedes.

Torque has been increased by between 10 per cent and 30 per cent across the entire engine speed range, giving the new 4.6-litre V8 a class-leading balance of performance and fuel efficiency.

Lexus engineers have re-evaluated every aspect of engine operation, with special attention to developing high-rigidity components, optimising the balance of all moving parts and minimising friction.

The Lexus engine facility combines ultra-sophisticated production techniques with the skills of master technicians.

Precision assembly methods ensure world-leading performance in the fields of refinement, quietness and durability.

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LS460 HAS EIGHT-SPEED AUTOMATIC TRANSMISSION


Lexus developed a new eight-speed automatic transmission to give LS460 a unique combination of performance and fuel economy.

Cutting-edge electronics simultaneously match the optimum gear selection with engine torque.

The eight-speed transmission's wide spread of ratios means LS460's 4.6-litre dual VVT-i engine can deliver high performance coupled with the best fuel economy of any V8 petrol engine above 4.0 litres of displacement.

The LS460 transmission has a casing made from die-cast aluminium to minimise weight and maximise rigidity.

Miniaturisation of parts, an improved hydraulic circuit with fewer components and a more efficient gear train mean the exterior dimensions of the new transmission are the same as the LS430's six-speed transmission.

The new casing is 10 per cent lighter, yet 30 per cent stiffer, than its six-speed predecessor.

The new transmission has 22 per cent higher torque capacity than the superseded six-speed transmission and a service weight of 95kg - just ten per cent more than its predecessor.

The precision and strength of each gear tooth has been improved, to ensure smooth operation with the new engine's 493Nm of torque.

Micro-laser technology has been employed to develop a polishing system that affords a perceptible improvement in the precision finishing of surface areas, while maintaining necessary gear tooth thickness.

As a result, gear tooth surface production tolerances have been reduced by some 50 per cent to combine maximum torsional rigidity with a smooth, firm gear meshing action.

Aluminium has replaced steel as the material for gear tooth surfacing, to reduce weight.

In addition, both the sun gear drums and the clutch hub are aluminium, reducing component weight by 50 per cent in each case.

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LS460 D-4S FUEL INJECTION SYSTEM SHOWS THE WAY


The new LS460 engine has the latest evolution of Lexus' stoichiometric, four-stroke, direct-injection technology, for maximum engine efficiency throughout the engine revolution range.

The Lexus D-4S (Direct-injection 4-stroke Superior-version) system has two injectors per cylinder - one injector in the combustion chamber and a second mounted in the intake port.

The dual injector system combines the strengths of both direct and port injection, for optimum engine efficiency throughout the power band.

It boosts torque by 7.5 per cent across the rev range, while minimising fuel consumption and emissions.

D-4S also substantially reduces combustion fluctuations in comparison to any conventional, direct or port injection system.

The D-4S system has 12-hole port injectors that inject fuel at a maximum pressure of four-bar.

The in-cylinder injectors have twin 0.52 by 0.13mm rectangular slits to produce a double fan, 130-bar injection pattern - for the most homogenous possible air/fuel mix.

Under cold start conditions, D-4S system employs port injection during the intake stroke and direct injection during the compression stroke.

This produces an air/fuel mixture of 15-16:1, generating a richer mixture around the spark plug and raising the temperature of exhaust gasses, to create a quicker warm-up of the two thin-wall catalysts.

At idle, the engine runs on direct injection alone, due to its higher efficiency.

When the engine is running under a low to medium load at lower speeds, both direct and port injection systems are used during the intake stroke.

This creates a homogenous, 12-15:1 stoichiometric air/fuel ratio to stabilise combustion, improve fuel efficiency and reduce NOX and HC emissions.

Direct injection alone is used when the engine is running under heavy loads, using a 11.8:1 stoichiometric air/fuel ratio during the intake stroke.

The use of direct injection at high engine load creates an intake cooling effect, which improves the efficiency of each charge.

The LS460 engine can therefore employ a high compression ratio, while reducing pre-ignition tendencies and improving engine output and performance.

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LS460 DUAL VVT-i COMES WITH WORLD-FIRST VVT-iE


Lexus LS460 engine's dual VVT-i system incorporates the world's first intelligent electrically controlled, continuously variable valve timing system to the intake camshafts.

The dual VVT-i system provides optimised variable intake and exhaust timing, for increased low-end and high-end torque, by making optimum use of valve overlap.

The dual VVT-i also contributes to a significant reduction in exhaust emissions, such as NOx and HC.

Lexus developed electrically controlled VVT-i to provide additional benefits and greater valve timing control.

Hydraulic VVT-i cannot operate below 1000rpm or when the engine is cold.

However, the VVT-iE system (Variable Valve Timing - intelligent Electric) will operate across the full engine revolution and temperature spectrum, with a cam response speed of some 50 degrees per second in the retardation phase and 150 degrees per second in the advance phase.

Special attention has been paid in the production of the camshaft control motor components - from the coil diameter and shape and the optimum magnet position, to the uniform winding of the high-density coils - to ensure perfectly matched magnetisation within each stator core.

Precision milling of the motor shaft bearings further ensures that VVT-iE operates with negligible vibration.

Lexus engineers have developed a special mechanism to ensure smooth engine start-up.

The cam phase shifts when the engine stops, making it difficult to halt the cam at the optimum position for engine re-start using the electric motor alone.

Lexus therefore developed a new system that employs frictional resistance and speed-reduction gearing - to hold the cam phase in the ideal position for engine start-up.

In addition, Lexus engineers paid strict attention to the quality and durability of the components that provide camshaft timing adjustment.

A high-precision-finish plate and narrow pins are employed at the interface of the speed reduction gear and phase converter, to transmit the electric motor's high rotational torque.

The exceptional hardness of these elements required unique cutting and polishing technology.

Lexus therefore used a scroll machine (based on the mechanics of a tool used for cutting air conditioner parts), to guarantee the required base-cutting precision.

A low air pressure grindstone, with a weak constant pressure, is then used to polish the parts to a mirror-finish surface.

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LS460 - IT DOESN'T GET MUCH QUIETER


Lexus LS460 was designed to maintain LS's status as one of the quietest cars in the world.

The noise and vibration counter measures began at the source, with special attention to minimising of engine friction, enhancing rotational balance and increasing the ability of the engine mounts to absorb vibration.

Lexus used extensive computer aided design analysis, incorporating thermal deformation data from a running powerplant, to develop the highest possible rigidity in the cylinder block and oil pan structures.

The precision location of the crankshaft within its journals provides perfect rotational balance.

Attention to detail included the angle of cross-hatched machining marks to the inner bore wall of the cylinder block.

It has been optimised at 30 degrees to minimise the transmission of vibration.

Lexus has minimised induction noise by reducing vibration throughout the entire intake system.

The new dual-pipe air intake system is mounted directly above the engine.

The air-cleaner box walls have construction ribs to suppress resonance, while the space between the air cleaner and engine cylinder head-covers is plugged with urethane spacers to prevent the transmission of engine vibration.

A skilled technician implements a detailed vibration check of each engine after it is assembled.

He uses a stethoscope to listen for any minute, abnormal sounds within the running powerplant, and makes the necessary adjustments to ensure that each Lexus 4.6-litre engine conforms to its precise, micron-exact design specification.

He also ensures that each engine produces the pleasing tonal quality appropriate to LS's role in the Lexus model range.

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INTELLIGENT POWERTRAIN CONTROL SYSTEM FOR LS460


Lexus LS460 has a unique electronic powertrain management system, designed to provide improved throttle pedal control, linear power delivery and optimum gear-shift quality.

The new Intelligent Powertrain Control also contributes to minimising torsion-induced propeller shaft vibration during acceleration, and hence lower interior noise.

The high speed operational characteristics of LS460's new eight-speed transmission require the closest possible cooperation between engine and automatic transmission Electronic Control Units (ECUs).

Lexus therefore developed Intelligent Powertrain Control, which analyses, prioritises and combines the demands of every system ECU that can influence power output.

It centralises control of the throttle valve actuator and ignition timing, via the engine ECU.

Conventional electronic engine control systems rely on the independent communication of diverse ECUs - such as the transmission, engine, VDiM and Pre-Collision safety System ECUs - with the throttle valve actuator.

The new Lexus system not only optimises the speed and smoothness of any gear change, it also provides a faster, more precise response to other ECU demands such as those of the all-important VDiM or Pre Collision safety System.

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LS460 GEAR TRAIN AND HYDRAULIC CONTROL OPTIMISE TORQUE


Lexus LS460's unique eight-ratio transmission can perform multiple gearshifts - rather than merely change one ratio at a time - to optimise torque under all load conditions.

The ability to effect multiple gearshifts creates the smoothest possible operation.

The Lexus AA80E gear train consists of a double planetary gear set and a Ravigneaux planetary gear set.

This layout is complemented by four disc clutches, a single one-way clutch and two disc brakes.

Conventional shift control releases one engagement clutch before the connection of a second.

However, the AA80E eight-speed gear train has been designed to transmit power through either one of the two engagement clutches at all times, minimising time lag and shift shock.

The transmission's new hydraulic system combines linear solenoid valve and control valve in one single unit.

Besides contributing to the overall compactness of the unit, this new strategy allows for a significant further reduction in gear changing times.

Shift times are as short as 350 milliseconds, 41 per cent faster than the LS430's six-speed auto.

The use of eight-speeds in the LS460's new transmission provides a wide spread of gear ratios, for an optimal combination of performance and fuel economy.

Lexus has further enhanced fuel efficiency through an extended cut in engine fuel injection under deceleration and the expansion of the neutral control operation range.

The Neutral Control System automatically decouples the engagement of the transmission in the 'D' position while the vehicle is idling at a stop, reducing engine load and improving fuel efficiency.

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LS460 CONSTRUCTION AND PRECISION ASSEMBLY


Lexus engineers developed computerised engine design models as part of the development process for LS460's new V8 engine equipped with dual VVT-i and direct injection.

Lexus created the computerised design models as part of its quest to boost engine performance by minimising friction and maximising precision in the engine assembly process.

For the first time, the engineers were able to successfully digitise the thermal deformation that occurs within an operating engine.

This allowed the engineers to incorporate 'real use' conditions into the design drawings, fine-tuning several aspects of both the design and production process to achieve an optimum balance of power and smoothness.

The cylinder block is die-cast in a new, lightweight and high-strength aluminium alloy, to reduce the overall weight of the engine.

The block structure and rib reinforcement design were finalised through the incorporation of cylinder combustion pressure data to minimise both vibration and noise.

In addition, the engine head cover is constructed in a lightweight magnesium alloy to lower the powerplant's centre of gravity.

Both the block and cylinder head are checked before assembly using an X-ray inspection device and a CT (Computed Tomography) scan - similar to those used in human diagnosis.

This is a precaution against the possibility of cavity bubbles within the castings absorbing metal deformation under high temperatures.

The CT scan establishes the size and number of all such cavities.

This information supplements established thermal deformation data to ensure that, for each powerplant, engine deformation occurs within the exceptionally precise parameters established at the design stage.

The camshafts are hollow and have separate cam lobes to achieve a significant camshaft weight reduction and therefore a reduction in energy lost in rotating the shaft.

Separate cam lobes are then assembled to the camshaft, which is first cooled by liquid nitrogen.

Such a process facilitates the machining and polishing of a far more exact cam profile, to further enhance engine power output.

Within the cylinder block, painstaking care has been taken to eliminate variations in engine rotation due to both discrepancies in cylinder wall resistance and fractional differences in the air/fuel mixture delivered to each cylinder.

Minimal-resistance intake and exhaust pipes were developed to optimise combustion gas flows.

The conventional point location measurement has been replaced by a bespoke three-dimensional cylinder inner wall measuring device.

It ensures the gap between cylinder lining and piston and meets the strictest design parameters throughout the stroke cycle.

Every area of the crankshaft - including the friction points and the piston pins - has been carefully polished to a mirror finish.

This attention to detail minimises the friction generated when the vertical movement of the pistons is converted to rotational movement and optimises rotational balance.

A burr removal system was also developed to ensure that oil is smoothly delivered throughout the engine with minimal resistance.

Lexus spent six months developing a high-pressure nozzle for this purpose.

The nozzle delivers smoothing liquid incorporating ultra-fine alumina particles to thoroughly polish previously unreachable areas such as the crankshaft lubrication holes.

In addition to a significant increase in individual component manufacturing precision, LS460's engine has the highest possible levels of engine assembly precision to meet Lexus' highly exacting design requirements.

New dual-arm advanced-precision robots were developed specifically for the LS460 production line, and a rigorous inspection process was introduced to check assembly tolerances against design parameters every time high-precision parts are combined.

LS460's new V8 further benefits from a new engine cooling technique: Partial Head Pre-cooling.

Radiator coolant is fed into the cylinder head, effectively cooling the combustion chamber periphery.

The heated coolant from the exhaust side - which has a tendency to gather the most heat - is then fed through the water jackets of the block, achieving even heat distribution.

The resultant control of bore deformation reduces mechanical friction loss and contributes to an improved NV performance.

These state-of-the-art production technologies allow the new engine to achieve the lowest level of mechanical friction loss amongst V8 units.

Immediately before the final elements of the assembly process, a motor is used to crank the engine and check for unwarranted vibrations.

Finally, the completed engine is tested under its own power: an accelerometer is mounted to both the front and rear of the crankshaft, measuring rotational differences between the crankshaft extremities under load to ensure the LS460 engine has the smoothest possible operational balance.

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LS460 SEMI-DUAL EXHAUST MANIFOLD


The new Lexus V8 engine features a semi-dual exhaust manifold which reduces interference in the flow of exhaust gases, improving output and combustion efficiency.

The semi-dual exhaust manifold connects non-adjoining cylinders, based on the engine ignition sequence.

It divides the traditional single manifold into two, and merges midway.

The connection of cylinders with long ignition intervals minimises exhaust counter-pressure interference to ensure the smoothest possible flow of exhaust gases.

The exhaust pipe profile was modified to an elliptical shape, while maintaining the overall cross-sectional area to accommodate the new design within the confines of the engine bay.

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LS460 DUAL-PIPE AIR INTAKE SYSTEM


Lexus LS460's V8 engine has an over-the-engine, dual-pipe intake system with compact air filter elements and an Acoustic Control Induction System (ACIS).

This combination of intake system features ensures optimum air-intake flow to support the 4.6-litre V8's increased performance compared with the superseded 4.3-litre engine.

The high-speed, electrically activated ACIS system varies air induction by automatically adjusting the intake pipe length according to engine revolutions per minute.

It optimises the air/fuel mixture to further boost torque across the full rev range.

Slight inconsistencies in air intake volumes between the two cylinder banks (which result from the use of independent left and right intake ducts) have been eliminated by the adoption of a single inlet design.

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LS460 EPS WITH VARIABLE GEAR RATIO STEERING


The LS460 is the only car in its segment with a high-power, speed-sensitive Electric Power Steering (EPS) system, featuring Variable Gear Ratio Steering (VGRS).

The compact, lightweight, electrically assisted steering system offers noise-free operation, seamless and linear feedback, and smooth lane-changing assistance characteristics depending on vehicle speed.

The adoption of these features is instrumental in the use of steering support cooperation with the Vehicle Dynamics integrated Management (VDiM).

Designed specifically for LS460's front multi-link suspension configuration and 19-inch tyres, the new EPS features a newly developed step-up DC-DC power converter that increases output from 27 to 46 volts and a custom made, 110mm-diameter, high-output brushless motor.

The precision-assembled motor has almost double the output capacity of a conventional power steering unit.

The new unit is just 25mm larger in diameter than its predecessor thanks to the improved accuracy of the magnet attachment positions, the meticulous finishing of the ball screw rolling contact surfaces on the steering gear and optimised wire tension at the winding line.

The adoption of a new, high-rigidity steering intermediate shaft and a slider joint with zero rotational clearance gives LS460 an exceptionally smooth, direct steering feel, with agile and linear yaw response and exceptionally detailed feedback.

The new EPS system also gives Lexus LS460 a quicker steering ratio of up to 16.7:1 for models fitted with VGRS and 19inch wheels, in comparison to the 16.4:1 of its predecessor.

VGRS employs an actuator attached to the intermediate steering column shaft that alters the steering gear ratio according to vehicle speed.

The system can vary the steering gear ratio by up to 30 per cent, representing a 130-degree phase in steering wheel angle.

At very low speeds the gear ratio is at its lowest - 2.4 rotations lock to lock - to reduce both the steering input and effort required during tight cornering and parking manoeuvres.

At medium speeds, the gear ratio is optimised for light, accurate vehicle response when cornering.

And at high speed the ratio is at its highest - 3.5 rotations lock to lock - to ensure gentle response to inputs and maximum vehicle stability.

LS460 is equipped with a newly developed VGRS actuator attached directly to the EPS gear.

The small, high-output motor features a hollow structure to accommodate the torque sensor shaft.

It has a failsafe mechanism whereby the input and output shaft are directly connected by locking the motor shaft immediately an abnormality is detected.

This gear integration not only contributes to a more compact design - 40 per cent shorter and 30 per cent smaller in diameter than that of Lexus GS Line - but also an improved collision safety performance.

The adoption of the VGRS system promotes excellent driver feedback, with refined steering wheel operation at very low speeds, reduced understeer feel and enhanced steering adjustment response when cornering, as well as minimal steering angle adjustment required when changing lanes.

The VGRS system actuator is also linked to the LS460's sophisticated VDiM control system which, as LS460 approaches the limit of its performance envelope, constantly re-evaluates the steering gear ratio to optimise the front wheel steering angle and so maintain vehicle stability with minimum driver input.

In addition to the numerous technical improvements instigated to improve steering feel and response in all conditions, Lexus engineers also designed the LS460 to have the best manoeuvrability, attaining a turning circle of 10.8-metres.

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LS460 POWER CONTROL ECU


LS460 has a new Power Control Electronic Control Unit (ECU), to optimise control of the unprecedented number of high-technology electronic systems within the vehicle.

The new ECU continuously monitors changes in battery current, voltage and temperature, automatically instigating a range of measures to ensure the durability and reliability of the vehicle's power supply.

It performs this role for the vehicle's increased number of by-wire systems, as well as systems that continue to function when the vehicle is parked and systems with short-term large power demands.

For example, if the vehicle remains parked for a long period of time, the Power Control ECU will both detect and isolate abnormal parasitic current draw, and progressively shut down the power supply to non-essential systems, maximising battery life.

The ECU is also fundamental to regularising an adequate power supply to guarantee the optimum performance of essential safety systems - such as the Pre-Collision safety System (PCS) and Variable Gear Ratio Steering (VGRS) - whenever their activation is required.

At all times, the ECU will cut and reduce loads with low necessity when either battery voltage or power generation capacity drops.

It can also suppress voltage fluctuations resulting from the short-term operation of large power systems and increase engine idling speed when insufficient battery charging power is detected.

The Power Control ECU will also warn the driver in the event of charging system failure.

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LS460 DESIGN AND REFINEMENT


Lexus LS460 was conceived at the Lexus Design Centre as the latest representation of Lexus' unique L-finesse design philosophy.

L-finesse is a groundbreaking design rationale inspired by Japanese culture, both ancient and modern.

The radical new design direction expresses three fundamental elements:


  • Incisive Simplicity - perhaps best explained as purity
  • Intriguing Elegance - a sense of depth that appeals to the emotions, and
  • Seamless Anticipation - part and parcel of traditional Japanese hospitality, wherein experience and care are essential to the anticipation of the needs of your guest.


The L-finesse design philosophy therefore reflects the harmony of simplicity and complexity inherent in the intriguing elegance and purity of traditional Japanese aesthetics.

It is also committed to the pursuit of unique human-interface engineering solutions through pre-emptive anticipation of passenger requirements.

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LS460 EXTERIOR DESIGN HIGHLIGHTS


The all-new, fourth-generation Lexus LS is longer, wider and lower than its predecessor.

The wheelbase has been increased by a significant 45mm to 2970mm, within an overall length increase of just 5mm (to 5030mm).

The increase in wheelbase translates to increased interior length.

Front overhang has increased by 40mm, while rear overhang has decreased by 70mm.

LS460 is also a substantial 45mm wider than its predecessor, at 1875mm, with an overall height of 1465mm.

The new LS shares numerous L-finesse design cues with both the Lexus GS and IS luxury sedan ranges.

It marries powerful, sweeping lines with natural but sudden contrasts in form, allied to convex and concave shadow surfacing, to reinforce the central tenets of the new design philosophy.

The wide, horizontally latticed grille instantly identifies the new LS as a Lexus.

Large, purposeful, poli-ellipsoidal projector headlights are positioned on a higher plane than the grille itself, creating a unique frontal balance.

The strong, arrowhead motif to the headlamp glazing generates a powerful coachwork line which frames the clean, muscular surface of the bonnet before sweeping seamlessly into the A pillar.

This key L-finesse motif expresses dynamism through a rapid, yet fluid change in direction, creating an analogy to Japanese calligraphy or the movement of a Samurai sword.

Unique to Lexus, the LS460's sidelights adopt the form of the L-finesse arrowhead motif within the headlamp cluster glazing, making the new Lexus flagship instantly identifiable even at night.

In profile, both the bonnet line and the belt line run uninterrupted for the full length of the vehicle.

The proportions of the LS460's long cabin are unique to the new L-finesse design philosophy in spacing both windscreen and rear window bases proportionally equidistant from the vertical axes of their respective wheel hubs, reinforcing the generous interior dimensions of the new sedan.

The blacked-out B pillar further emphasises the clean homogeny of the side glazing, which is framed by an elegant, one-piece zinc moulding featuring both a trademark slingshot graphic to the rear and strong arrowhead motif detailing at both A and C pillars.

At the rear, the roof line flows smoothly into the boot lid surface, highlighting the upper edge of the large, wraparound tail-light clusters while the vehicle's belt line terminates at the top of a sharply truncated rear boot panel, itself deeply incised into the rear bumper.

An innovative exhaust design seamlessly integrates the pipes within the bodywork while mirroring the arrowhead fog-lamp/air-intake detail to the base of the front spoiler.

The LS460 has a class-leading drag coefficient of just 0.26.

The new LS460 will be available in a range of 10 exterior colours, including three newly developed specifically for the LS460: Sable, Jade and Sapphire.

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LS460 FEATURES BRAND NEW PLATFORM AND BODY SHELL


Lexus LS460 has an all-new platform and body shell, with significantly increased torsional rigidity.

The new stronger body contributes to improved safety, handling, and durability, and lower NVH, while meeting strict weight targets.

Lexus has used a combination of high-tensile steel and aluminium components to give LS460 an ultra-stiff, yet lightweight body offering minimal vibration transmission.

The use of ultra-high-tensile steels accounts for 40 per cent of the constituent steel body components.

This includes the use of AISI 590 ultra-high-tensile steel in the front member, centre pillar, rocker and roof side areas, to further reduce weight, increase rigidity and ensure class-leading collision safety.

The front sub-frame is now constructed as a single, hollow, die-cast unit precision machined at all mounting and location points to ensure it meets the exacting tolerances required.

The LS430 front sub-frame was fabricated from some 30 separate components.

The amount of laser welding in LS460 has doubled compared with LS430.

High-precision laser welding was a world automotive first when Lexus introduced it in LS400.

The use of laser welding contributes to greater manufacturing accuracy.

The increased rigidity provides a stable platform for the suspension and hence contributes to enhanced steering response and feedback, improved body control when cornering and reduced transmission of vibration from poor road surfaces.

A combination of both spot and laser welding to the door opening crank area and room partition area maximises the torsional strength of the LS460 cabin.

Aluminium components include the bonnet assembly, front and rear crush-box structures and bumper reinforcement, as well as the front suspension sub-frame.

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LS460 HAS OUTSTANDING AERODYNAMICS


New Lexus LS460 continues the 17-year LS tradition of leading-edge aerodynamics.

It has a drag coefficient of just 0.26.

In addition to its low Cd, LS460 has an exceptional rear coefficient of lift - one of the keys to high-speed cornering stability.

LS460 has front and rear coefficient of lift figures of 0.02 and 0.01 respectively, the former figure being 100 per cent, and the latter 200 per cent, lower than those of its predecessor.

LS460 has exceptionally narrow panel gaps and minimal protrusions.

Flush bonnet, headlight and windscreen surface surrounds minimise airflow separation, while door-mounted mirrors reduce air turbulence next to the A pillar.

The addition of numerous aerodynamic underbody elements creates the smoothest, flattest possible surface to enhance high-speed vehicle stability and reduce wind noise to a minimum.

These include a deep front spoiler, side skirts, front and rear tyre fairings, and covers to the cabin floor, transmission, fuel tank and rear suspension.

Even the body attachment points have been designed with a flat concave seating to minimise wind turbulence.

The fully flat central undercover presents exceptional noise-absorbing capabilities, particularly at higher frequencies.

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LS460 FEATURES MULTI-LINK AIR SUSPENSION


The Lexus LS460 has all-new air suspension front and rear.

It is the first Lexus sedan in Australia with air suspension.

Lexus Adaptive Variable air Suspension is standard equipment.

In addition, the new 4.6-litre Lexus has multi-link type suspension front and rear, with aluminium components.

LS460 has a larger footprint on the road than the vehicle it supersedes.

The new Lexus has a front track of 1610mm and a rear track of 1615mm, resulting in an exceptional improvement in high-high speed stability.

Its wheelbase has been increased by 45mm compared with the superseded LS430.

In addition to its air suspension and Vehicle Posture Control system, the new suspension has state-of-the-art monotube dampers.

This all-new suspension package gives LS460 exceptional stability and steering feel, while improving ride comfort and reducing noise and vibration.

Front Suspension:

Lexus LS460's front suspension is a newly designed system with upper and lower double joints.

Both upper arms, the knuckle and the lower number two arm are forged in lightweight aluminium to significantly reduce unsprung mass and improve roadholding.

LS460's front suspension and steering geometry has been completely redesigned to improve steering feel, ride and handling.

The geometry changes include increased king pin inclination, reduced offset at the spindle centre line and increased steering main-shaft torque.

The steering gear is mounted forward of the front axle centres.

The new LS has improved straight-line running on rough road surfaces, a more natural steering feel from its electric power-assisted variable-ratio steering, and increased steering torque build-up off centre.

The steering main shaft's torque has been increased compared with LS430 to provide a considerably more prompt response to steering input.

The new geometry also decreases the transmission of vibration from the tyres under braking.

Rear Suspension:

LS460's rear suspension is an all-new multi-link set-up that combines stiffer suspension component materials with a reduction in unsprung mass for optimum ride comfort with exceptional cornering stability.

All five suspension arms, carrier and the shock absorber upper support ring are forged in aluminium.

The revised suspension geometry of the rear multi-link configuration has been designed to generate a particularly linear toe-control curve, offering the highest levels of straight-line stability.

In addition, the adoption of two fully independent upper arms greatly enhances the compliance steer response time of the tyres.

Each upper arm controls both lateral and longitudinal forces, while the lower number two arm is dedicated to the control of lateral forces and the lower number one arm to the control of longitudinal forces.

This configuration introduces vertical force steer to the tyre, lowering the side force rising time and reducing response delay by almost 50 per cent.

This improves both steering response and stability throughout the normal speed range.

Air Suspension System with AVS and Vehicle Posture Control:

LS460's air suspension utilises new shock absorbers that operate in cooperation with an improved Adaptive Variable Suspension system (AVS).

The AVS has Vehicle Posture Control to synchronise vehicle roll and pitch when cornering, for enhanced ride comfort.

LS460's new suspension system reduces body roll by a substantial 30 per cent.

The dynamic characteristics of the new shock absorbers have been enhanced by a 20 per cent increase in air pressure (compared with previous overseas-specification air suspension LS430 models).

This change gives LS460 sharper handling and better system response to changing road conditions.

Newly designed air suspension components feature a metal cylinder, outer casing restriction that limits air expansion to reduce pneumatic hysteresis and improve high frequency ride comfort.

Movement of the sprung mass has been further controlled by the optimisation of the bound stopper clearance.

AVS allows the driver to fine tune LS460's ride characteristics with a choice of three damper settings, activated via a switch next to the gear lever.

Normal mode is chosen for a flat ride, while Sport mode gives improved body control and precise responses to steering input while cornering.

In either mode, AVS automatically adjusts the performance of the suspension at all four wheels independently.

It receives data from numerous sensor locations to continuously optimise the damping force of each shock absorber.

The control computer interprets data from an engine rpm sensor, front-wheel speed sensor, steering sensor, stop lamp sensor, front and rear vehicle height sensors, and three vertical acceleration G-force sensors.

It then activates the appropriate actuator within each shock absorber, continuously adjusting the damping force through nine incremental steps via a compressor located in front of the right front tyre.

AVS activates the adjustable damping force shock absorbers to fulfil a wide range of specific control functions in response to driving operation, vehicle body motion and road surface conditions.

Vehicle speed-sensitive control gradually increases the damping force as speeds rise, combining low-speed comfort with high-speed driveability and stability.

Anti-dive control increases front-end damping force under braking to reduce front-end dive.

Anti-squat control increases rear-end damping force to minimise squat during acceleration.

Roll control optimises vehicle posture and stability by adjusting the damping force to both inner and outer shock absorbers through a bend.

Unique to LS460, a new Vehicle Posture Control (VPC) damping force control logic is incorporated within the Adaptive Variable Suspension system to minimise the phase difference between body roll and pitch angles during cornering.

Research by Lexus engineers has revealed that a large phase difference between roll and pitch angles can cause passenger discomfort, by exacerbating the perception of vehicle body roll during cornering.

The new VPC control logic estimates both pitch and roll angles from the G-sensor value on the sprung mass, computing a target pitch angle from the resulting roll angle.

Feedback control is applied via the shock absorbers to minimise differences between target and actual pitch angle, which, in turn, minimises the phase difference between roll and pitch angles.

This phase synchronisation creates a smooth, controlled roll during cornering, with a well-matched vehicle response to steering, yaw and roll.

In addition to Vehicle Posture Control, the AVS system's Non-linear H control provides independent control of all four shock absorbers to optimise damping force in response to changing road surfaces.

Rugged-sensitive control reduces the degree of damping force when driving on rough roads, to give a smooth, comfortable ride.

Vibration control of the unsprung mass increases the damping force as appropriate when resonance is detected in the unsprung mass, to minimise road surface transmitted NVH under all conditions.

VDiM cooperative control adjusts the damping force in conjunction with the vehicle's stability control system to maximise the efficiency of the system.

Selecting the AVS system's Sport mode automatically increases the difference between inner and outer shock absorber damping through corners by approximately 20 per cent to further reduce vehicle roll.

Simultaneously, VGRS automatically reduces the steering gear ratio by approximately 10 per cent, while the Electric Power Steering (EPS) simultaneously increases steering assist torque by approximately four per cent.

These measures combine to minimise body roll, sharpen vehicle handling and optimise steering feel.

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LS460 PRECISION MANUFACTURING AND DESIGN


Lexus has developed a totally new production process for the manufacture of the LS460 at the company's Tahara factory: Advanced Craftsmanship.

The Advanced Craftsmanship process integrates Lexus' manufacturing quality with an entirely humanised focus on subliminal quality - those aspects of a car which cannot be physically measured or quantified, yet contribute at a fundamental level to perceptions of high overall quality.

It recognises the fact that there are still many areas of manufacture in which human skills far exceed those of even the most sophisticated automated systems.

Advanced Craftsmanship employs several techniques unique in the automotive industry.

It fuses state-of-the-art automated manufacturing operations and digital measurement technology with the expertise and craftsmanship of rigorously trained, highly skilled technicians at every stage of development, production and quality control.

Advanced Craftsmanship achieves significant improvements not only in overall, machine-measurable quality, but also in the perceived quality of every component, including the tactile quality of surfaces, the visual quality of component fit and surface finishes, and even the aural quality of the engine note.

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LS460 PAINT TECHNOLOGY AND HAND-POLISHING


Lexus has developed a new-generation robotised paint coating technology combined with the master craftsmanship of two hand-polishing techniques.

The new finishing process - part of the Advanced Craftsmanship production line - is designed to ensure LS460's surface quality is maintained throughout the finishing process.

Lexus created a custom-built, computer-controlled environment for the LS460 paint process.

It developed the process after analysing changes in paint colour and hue due to different application techniques, as well as variations in temperature and humidity at the time of application.

Temperature, humidity and paint jet volume are constantly monitored to control every aspect of the application process, from the size of air bubbles evaporating from the paint surface to the paint film drying time itself.

Information on digitised colour data from the paint check line means the system can continually check for colour variation.

This process counter-measures any potential change in perceived vehicle colour, brightness and saturation during the course of a day's production, due to changes in light intensity and any marked change in background colour.

The LS460 design team focused in particular on the orientation of high-intensity refractive materials inside the paint, such as mica, to ensure an even metallic gloss under all light conditions.

Digital data on the colour history of each part has been created, and is used to monitor and numerically control the colour of every part.

The same foundation finish is applied to parts fabricated in different materials - such as the bumper - and only parts precisely matching the specified digitised colour are assembled.

This eliminates differences in colour.

The design of new paint application technology was necessary to guarantee a perfectly uniform surface colour - due to the high level of brilliance of the finished surface of the LS460.

Using the datum of a vehicle spray-painted, by hand, by a master craftsman, detailed data was gathered on spray time and volume, paint application direction, and nozzle control techniques employed to ensure a uniform direction of powder particles.

Lexus then created a control program for the latest generation of paint application robots, which ensure the uniform painting of all panel edges and the complete eradication of paint puddles, spits and colour irregularities.

Fluorescent tubes are positioned on the paint inspection line to replicate virtual CAD body panel image highlights.

The inspection light tunnel is also equipped with a light source combining the three primary colours: red, green and blue.

These colours can be controlled to reproduce every different natural light condition from dawn to dusk as accurately as possible.

This light source proved the most effective in enabling master craftsmen to inspect every inch of the LS460 for accurate colour shading and the smallest paintwork irregularities, regardless of chosen body colour.

As part of the LS460 paint process, the vertical surfaces of the new LS460 are water-polished with a plane sander after each of the foundation coat applications, and checked by eye as well as digitally to ensure optimum perceived quality.

The next stage is water-polishing of the entire foundation coat by hand before the top clear-coating process, to ensure both a physically and visually high quality of finish.

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LS460 TOTAL DRIVING INSPECTION


Every Lexus LS460 undergoes a rigorous test course inspection on a new vehicle testing complex at the Tahara factory.

The inspection includes high-speed evaluations at up to 200km/h of seven main vehicle attributes: muffled noise and vibration, vehicle movement and lane-keeping stability, wind shear noise, brake performance, abnormal noise inside the vehicle, abnormal noise when turning, and ABS/parking brake operation.

Lexus even tests for noises generated on cobblestone roads.

LS460's suspension alignment is checked with a newly developed tester which uses laser measurement to detect alignment errors without the need to touch either the vehicle wheels or suspension components.

LS460 is then housed within a soundproof inspection booth that isolates the test environment from all extraneous ambient noise, and driven over a stone-paved roller to shake the vehicle.

Intentional shaking is generated to highlight any abnormalities that may be caused by the rubbing together of interior components, the sound of which is detected by a unique, seven-way microphone.

Vehicles that show acoustic abnormalities are then moved to an adjacent booth.

In this booth, a craftsman skilled in stone-paved (cobblestone) road driving analysis identifies the source of the abnormal sound and corrections to the relevant components are made.

A full driving test evaluation further confirms that LS460 is operating within the exceptionally fine noise and vibration tolerance levels established by design figures.

It ensures that riding comfort, steering response and every mechanical aspect of vehicle operation meet Lexus criteria and hence customer expectations.

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LS460 INTERIOR DESIGN HIGHLIGHTS


New LS460 continues the Lexus philosophy of Seamless Anticipation in its interior design features.

This philosophy is a central tenet of the L-finesse design philosophy, and is fundamental to the Lexus ownership experience.

Examples in new LS460 begin from the moment of initial approach to the vehicle, with the convenient Smart Key access, easy door closing assistance, and advanced illumination sequenced to correspond with the entry or exit of driver and passengers.

The LS460 interior combines state-of-the-art safety features with design aspects that emphasise protection, luxury and tranquillity.

The cabin is clearly divided into four independent areas, with the architecture of the seats and door trims designed to securely envelop each occupant.

The material used to cover the dashboard is designed to neither shrink nor degrade with time, even in countries with very high levels of solar radiation.

Design features include a distinct horizontal division of the cabin, reinforced by front and rear armrests and the corresponding detailing of the front seat backs to create a strong sense of enclosure and security at the lower level, opening out into a light, spacious upper compartment.

The aesthetics of the L-finesse design philosophy are reflected in numerous areas, including the top of the centre console and in the fluidity to the leather seam line of the front door trim, which extends up to the belt line and follows the contours of the occupant's body.

Door trim and dashboard create a consistent appearance, only achieved by the adoption of painstakingly matched materials with an identical graining and finish.

The highest-quality wood, genuine leather and elegant metal highlights are combined with unprecedented precision management of fit and finish throughout the cabin.

Component gaps have been refined and reduced by more than 50 per cent compared to those of the previous-generation LS.

In some cases the level of tolerance has been reduced to a previously unattainable 0.5mm.

New LS460 is available in a range of four interior colour combinations, each featuring differing but carefully coordinated, real wood highlights.

State-of-the-art ergonomics and tactile, functionally intuitive switchgear are a further hallmark of the new LS460's intelligent technology.

The outer sections of the centre console to the top of the centre (and central LCD screen) are flat, in order to make the buttons visible from both sides of the cabin.

However, the edges become curved below the LCD screen, to coincide with the individual driver and passenger temperature control buttons.

The surface of each button has been carefully shaped to alternate between the concave - for accuracy of use - and the convex, for easy location within the console.

Each lid installed in the console opens in the same direction and speed, with universally consistent damping, whatever the ambient temperature.

New LS460 has a 20cm touch-sensitive Electro Multi Vision (EMV) screen flanked by 15 buttons.

Every single operation may be rapidly effected within a maximum of just three steps.

The EMV screen can display high-quality, 800 x 480-resolution VGA graphics.

The Lexus flagship's front and rear seats have in-built air conditioning and heating.

A heated steering wheel, operative on the leather wheel grips, ensures optimum comfort for drivers on winter mornings.

All-new LS460 also has side laminated windows and ventilation, and a high-speed satellite navigation system.

Automatically dimming side and rear vision mirrors in LS460 deliver a seamless transition between day and night driving.

Automatic electric side mirrors fold to protect the car while parked.

A dedicated docking station for the DVD player remote in the rear armrest ensures that it is always on hand.

Rear vanity mirrors with auto-lighting, spring mounted flush-fitting coat hooks and roof and door mounted air conditioning are part of the attention to detail for rear seat occupants.

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LS460 HAS FOUR-ZONE AIR CONDITIONING


New Lexus LS460 has a rear-seat package, featuring an advanced air conditioning system with four-zone independent climate control.

The electronic system offers independent left and right control to both front and rear seats.

It manages zone temperature, as well as the choice of air outlets and the airflow volume.

High-Output Climate Control:

LS460 has a high-output climate control system, designed to quickly generate and maintain optimum interior comfort levels.

The system has been tested to excel in even the most extreme weather conditions.

The maximum airflow volume to the cabin in heating mode under driving conditions is 535 cubic metres per hour (642kg/h).

This powerful air conditioning system uses a variable-displacement compressor.

It allows the air conditioning system to work only as it is needed and operate more economically.

The independent rear climate control unit increases the total amount of intake air to 635 cubic metres per hour (762kg/h), and adds 1100 watts of cooling power.

Complete Sensor Network and Pollen Removal Mode:

LS460's advanced climate control system has 13 sensors to monitor climatic conditions.

It has three outflow temperature sensors for the separate temperature zones (one at the front, two at the rear), two front-face duct sensors, an external temperature sensor, two solar sensors for front and rear seats and a pressure sensor.

The system also features both front and rear cabin evaporation sensors.

In response to information provided by these two sensors, intake air is first cooled according to its humidity, then dried and heated to the desired temperature.

This avoids the sore throat feeling that can be generated by conventional air conditioners.

The four-zone system also has a pollutant sensor that measures the levels of nitrogen oxide, carbon monoxide and hydrocarbons in the outside air.

If the concentration of these pollutants rises above a defined threshold, the system will automatically switch to recirculation mode.

In fresh-air mode, two combined filters are permanently in use.

These absorb pollutants, intercept plant pollen and dust particles, and reduce odours.

In addition, a Pollen Removal Mode switch automatically activates air recirculation for a period of three minutes in order to clean the cabin from airborne allergens.

It operates with an efficiency of 97 per cent.

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LS460 HAS SMART KEYLESS ENTRY


New Lexus LS460s Smart Keyless Entry System features the slimmest electronic key card, measuring just 3.35mm.

The Smart Card is four percent smaller than a standard credit card.

It has an area of 83 x 53mm, but includes a conveniently concealed, conventional metal key that provides access to the car in the rare event of a system failure.

When the Smart Card comes within 0.7 to 1.0 metre of the locked door, the key communicates with a transmitter built into the door handle and matches ID codes.

A touch of the handle unlocks the door, and a push of the touch button relocks the car.

The Smart Card can be programmed to store the preferred settings of each driver, such as electrically adjustable seat and steering wheel positioning.

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LS460 HAS ALL-DOOR AUTOMATIC OPERATION


The new Lexus LS460 has an automatic door closer system on all four doors.

The system senses a closing but unlatched door in just 0.3 seconds and engages built-in electric motors to pull the door fully closed.

The door-closing mechanism is more compact than previously, thanks to a planetary gear set for the actuator's reduction gear mechanism.

It also has a new electric motor that operates at a lower speed for reduced noise.

LS460 also features an electric boot operation that can completely open the boot lid at the press of buttons located either in the interior, or on the Smart Key.

Closing the boot is a simple matter of pressing a button on the boot lid.

This feature, first introduced in the Lexus RX330 SUV, has been further improved in the new Lexus LS460.

Boot closing movement is completely linear, decelerating just before the boot lid is fully closed for a more refined, quiet operation.

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LS460 HAS HIGHEST-QUALITY SEATING


Lexus LS460 has full-leather seat trim, with hides carefully selected and matched to ensure conformity throughout the car's interior.

Extended buffing and pressing time guarantees the smoothest, most even surface possible, whilst the leather is finished in super-seam, double-stitched sewing.

The seats are upholstered in a choice of four trim-complimentary colours: Vintage White, Shadow Grey, Raven and Ivory.

The all-new LS460's seats have increased comfort and support.

The front seat base features a three-dimensional net tailored to the characteristics of human muscles to enhance both vibration damping and support during high-speed cornering.

The cushion pad 3D net improves the fit of the seat surface to maintain correct passenger posture as well as offer a high vibration-absorbing capability to reduce fatigue.

The front seats have a comprehensive power adjustment with preset memory function, including a centre seatback flexing function and a new four-way lumbar support adjustment on the driver's side (two-way for passenger).

The driver's side has a backboard-type headrest that automatically raises as the seat base is retracted to accommodate taller occupants.

All seats have built in air conditioning and heating.

A semi-conductor heat exchange element generates cold or warm air, as required, whilst blowers installed in the seat back and cushion direct air through the seat upholstery.

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LS460 HAS STATE-OF-THE-ART MARK LEVINSON AUDIO


Lexus LS460 has a multimedia and navigation system, with a state-of-the-art Mark Levinson Surround System audio.

Over 2000 hours of laboratory and on-road voicing have optimised the Mark Levinson Reference Surround for the specific acoustic characteristics of the LS460 passenger cabin.

The combination of the Mark Levinson Reference Surround System and Electro Multi Vision display screen introduces Lexus LS460 owners to a complete, discrete 5.1 home theatre entertainment experience optimised for the playback of music, music videos and DVD films (when the vehicle is stationary).

Fifteen-Channel, 450-Watt DSP Amplifier:

The amplifier in LS460's Mark Levinson audio has a maximum 450 watts of power.

The all-new, discrete-circuitry, ML3-16 Processor Power Amplifier covers a frequency range of 20Hz-20kHz, producing up to 450 watts with less than 0.1 per cent Total Harmonic Distortion (THD).

The amplifier circuitry utilises individual transistors, capacitors and resistors to provide a level of electronic and sonic performance not available from the integrated power circuits typically used in automotive audio systems.

5.1-Channel Surround Speaker Architecture:

The LS460 audio system has separate, full-range side and surround channels to provide an extraordinary sense of musical envelopment and depth for all passengers.

It has a total of 19 loudspeakers (12 of which are unique to this system alone), each one custom-engineered for the particular acoustic characteristics and location within the LS460 cabin.

The system has seven 25mm tweeters, seven 100mm midrange units, two 150mm x 230 mm front woofers, two160mm rear woofers and one 250mm subwoofer.

Mark Levinson loudspeakers use a variety of advanced materials, construction techniques and geometry.

There are rare-earth Neodymium Iron Boron magnets, pure titanium-diaphragm tweeters and polypropylene-composite driver materials, special adhesives, large voice coils and a high-impedance design to ensure superior power handling and durability.

In addition, the 160mm woofers, mid-range units and tweeters have metal cone and dome geometries, offering greater cone rigidity and lower mass.

The sonic benefits are high-resolution, more natural dynamics and harmonic richness.

High-Power/Low-Distortion Bass Reproduction:

The Mark Levinson audio system uses bridged channels to provide 100 watts of power to each front door woofer and the rear deck 250mm subwoofer.

This significantly reduces distortion, while increasing the dynamic capability of the system to reproduce the high-energy transient events in today's music and movie performances.

All-Digital Signal Path:

LS460's audio system uses an all-digital sonic path to minimise sonic degradation from noise, magnetic interference and signal conversions.

It transmits a robust digital signal from the disc to the power amplifiers to maintain the fidelity of the original source material.

The transmission of signals from the source to the amplifier is via a fibre-optic cable.

Extensive Format Compatibility:

The Mark Levinson Reference Surround System is fully media-compatible with CD, CD-R, DTS 5.1, DVD video and DVD audio discs (via the Electro Multi Vision screen), as well as MP3 and WMA music files recorded either on a CD or DVD.

Format compatibility includes two-channel stereo (analogue and PCM), two-channel Surround Sound, Dolby Digital 5.1, and DTS 5.1 (from DTS 5.1 CD, DVD video and DVD audio discs).

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LS460 OFFERS ADVANCED REAR SEATING EXPERIENCE


Lexus LS460 has an advanced rear seat package to increase comfort.

The 40:20:40-split powered rear seats recline, slide back and forth and feature electric head rest adjustments to achieve maximum comfort.

This helps maintain the posture of the upper body in a relaxed position, while significantly improving forward visibility.

The rear air conditioning system is significantly more efficient than the standard ventilation system in maintaining the desired seat temperature.

In addition, electrically operated, full-coverage sunshades are fitted to all rear windows, including the side window quarter light.

A rear-seat home theatre experience is fitted as standard equipment.

It has a retractable, ceiling-mounted, 23cm full-colour LCD screen which, unlike the Electro Multi Vision screen mounted in the front centre console, will continue to screen DVDs while the LS460 is in motion.

A video plug is installed in the centre console storage compartment, allowing for the connection of external video devices such as a video camera or a game console.

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LS460 HAS PRE-COLLISION SAFETY SYSTEM


New Lexus LS460 has a world-class Pre-Collision safety System (PCS), designed to recognise potentially dangerous situations in advance.

It follows the introduction of the Lexus PCS on GS430, GS450h and IS250 Sports Luxury.

Engineers at the Lexus Development Centre in Aichi, Japan developed the system.

The system's key features are:
Pre-Collision Brake Assist - this system will be put on stand-by, providing maximum brake pressure the moment the driver activates the brakes
Adaptive Variable Suspension (AVS) - stiffens the dampers and helps control nose dive when Pre-Collision braking is engaged and increases the responsiveness of the vehicle to steering inputs for evasive action.

If the system subsequently determines that a collision is unavoidable, PCS then activates the Pre-Collision Seatbelt (PSB).

The Pre-Collision Seatbelt pre-tensions the front seatbelts through the motorised uptake of slack to maximise their initial restraint performance.

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LS460 ACTIVE SAFETY


Lexus LS460's comprehensive active safety package has two segment firsts.

It has Lexus' unique Vehicle Dynamics integrated Management (VDiM) system and Variable Gear Ratio Steering (VGRS).

These key Lexus technologies establish an unprecedented link between active and preventive safety measures.

Vehicle Dynamics integrated Management (VDiM):

LS460 has Lexus' state-of-the-art VDiM system to enhance performance, traction control and vehicle stability.

VDiM integrates all LS460's active safety, steering and suspension control functions.

The VDiM controls functions such as the electro-hydraulic Electronically Controlled Braking (ECB), Anti-Lock Brakes (ABS), Electronic Brakeforce Distribution (EBD), Traction Control (TRC) and Vehicle Stability Control (VSC) active safety systems with the Adaptive Variable Suspension (AVS), Electronic Power Steering (EPS) and Variable Gear Ratio Steering (VGRS) systems.

Lexus VDiM is the only system to fully integrate all these functions within a single system.

A conventional stability control system can only govern one active safety system at a time - with potentially significant time loss implications.

However, VDiM integrates simultaneous command of every appropriate system, providing independent wheel control to help keep the vehicle on the desired trajectory.

VDiM begins control functions in stages, before the vehicle's performance limit is reached.

Conventional stability control systems are only activated immediately before the vehicle's performance limit is exceeded.

The built-in ECB actuator makes this possible because it can control the hydraulic pressure of the brakes on each wheel independently and progressively.

The result is smoother vehicle movement and hence a more pleasurable driving experience.

VDiM can also adapt to the use of snow chains and winter tyres by reading the road parameters and acting to minimise grip losses.

The communication between VDiM and other body control systems is performed by a large capacity communication network, now with three Computer Area Network multiplex units.

VDiM compatibility tests were carried out continuously until the final development stage of each control system.

Reliability test programs spanning a range of thousands of patterns were incorporated into the VDiM ECU.

The number of test cycles was also substantially increased.

Several long-run tests were conducted in various countries, to test the robustness of the electronic solutions.

VGRS and VDiM cooperation:

LS460's VGRS employs an actuator attached to the EPS gear housing that alters the steering gear ratio according to vehicle speed.

At very low speeds, the gear ratio is at its lowest to reduce both the steering input and effort required during tight cornering and parking manoeuvres.

At medium speeds, the gear ratio is optimised for light, accurate vehicle response when cornering.

At high speed the ratio is at its highest to ensure gentle response to inputs and maximum vehicle stability.

VGRS cooperates fully with the LS460's VDiM system in order to ensure the most rapid and appropriate steering response possible under a variety of vehicle stability threshold conditions.

For example, on a road surface with differing degrees of grip on either side of the vehicle, sudden braking will cause the vehicle to pull towards the side with the higher friction coefficient.

VDiM can optimise the efficiency of the Electronically Controlled Brake (ECB) systems, while simultaneously activating the Electronic Power Steering (EPS) and VGRS systems to automatically regulate the steering angle and counteract the disparate left and right-side braking forces.

These coordinated actions minimise the driver steering input necessary to maintain straight line braking.

Similarly, when differing degrees of road surface grip cause the vehicle to pull towards the side of the lower friction coefficient under acceleration, VDiM automatically regulates the steering angle to maintain vehicle stability with minimum driver input.

In the case of oversteer, the VDiM system activates the independent wheel brake control through ECB and, in cooperation with the EPS and VGRS, engages a counter-steer function to help the driver control the trajectory.

The combined use of brake and steering control reduces the deceleration inherent in traditional braking systems, promoting a smoother driving experience.

In the case of excessive understeer, an increase in the steering gear ratio by the VGRS, allied to steering torque assistance by the EPS, automatically curbs excessive steering operation, while the VDiM system's engine output and brake controls helps achieve optimum vehicle stability.

In all situations, VDiM uses VGRS and EPS to assist the driver in the application of steering wheel input appropriate to the conditions and so helps to maintain control.

Simultaneous VDiM control of the Adaptive Variable Suspension (AVS) system also automatically regulates the suspension's damper rates to both optimise body control under extreme conditions and minimise vehicle nose-diving under emergency braking.

Electronically Controlled Brake (ECB) system:

The LS460 features an electro-hydraulic braking system.

Electronic control allows a reduction in brake system weight, while allowing a more precise brake force distribution and closer cooperation with other related systems, which is beneficial to VDiM operation.

The ECB has a new ECU with twice the processing speed of the previous system installed in the Lexus GS430 - to enable a closer cooperation with VDiM and other systems.

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LS460 BRAKE HOLD


LS460 has a Brake Hold function that, once engaged, automatically controls the brake force to maintain the vehicle in place once it comes to a stop.

With Brake Hold engaged, the driver only needs to operate the accelerator to start the LS460 after a temporary stop.

With the Brake Hold standby switch activated, Brake Hold is engaged when the vehicle comes to a halt, controlling the hydraulic brake pressure of each wheel automatically and removing the need for the driver to maintain brake pedal pressure.

The Brake Hold function is controlled by the Electrically Controlled Braking ECU, and cooperates with the electric parking brake.

The parking brake will automatically engage during Brake Hold if the driver climbs out of the vehicle, if the bonnet or boot are opened, or if a significant time has passed since the system's activation.

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LS460 PASSIVE SAFETY


Lexus designed the new LS460 with the intention of achieving class-leading safety in full-frontal, offset, side and rear collisions.

The safety structure of the vehicle reflects Lexus' stringent car-to-car impact compatibility standards.

It developed LS460 around a Lexus Advanced Compatibility Safety Structure - an all-new high-rigidity platform with a robust safety shell capable of absorbing a high degree of impact energy.

Lexus has increased the amount of high-tensile steel used in the body to produce a lighter, high-stiffness structure, capable of superior energy absorption.

The frontal energy absorption structure consists of a four-compartment-profile aluminium crush box with a lower, four-compartment-profile aluminium member that is an extension of the crushable front suspension member.

Specially positioned compartmentalising plates within both main crush box and ancillary member optimise load distribution to ensure an even deformation of the structures.

They also increase energy absorption by minimising the buckling of the crush box walls that usually occurs during a collision.

Impact load is distributed and absorbed over a wider surface to effectively absorb energy in various collision patterns and reduce damage to the other vehicle.

At the same time the lower member serves to prevent Lexus LS460 riding up over smaller vehicles and reduces the possibility of a pedestrian's legs becoming trapped beneath the vehicle.

Pedestrian protection has also been enhanced by the 30 per cent reduction in size of the air filters (mounted directly above the engine).

This allows for an appropriate engine/bonnet spacing for maximum bonnet deformation in the event of an impact.

The LS460's highly rigid body shell has numerous structural reinforcements to enhance its collision performance.

Extensive bracing within the floor platform offers enhanced torsional rigidity to significantly improve impact safety, whilst the use of tailored materials suppresses weight and promotes a high skeletal strength.

Lexus conducted comprehensive car-to-car side impact testing at 55km/h.

The information gained enabled the body engineers to reduce localised deformation by dispersing impact energy over a wider area.

Ten Airbags:

The Lexus LS460 has 10 SRS airbags, one of the most comprehensive range of airbags in its segment.

It has two-stage dual Supplemental Restraint System (SRS) front airbags including a twin-chamber passenger airbag, driver and front passenger knee airbags, front and rear side airbags, and full-length side curtain airbags.

The SRS twin-chamber passenger airbag is a first in the LS460's market segment.

There are advanced variable-force SRS front airbags for both driver and front passenger.

Sensors determine the severity of an impact and the force with which the airbags are deployed.

LS460 also has a passenger detection system that prohibits the activation of all front passenger airbags if the seat is unoccupied.

In addition to front, side and curtain shield airbags, the LS460 has SRS knee airbags for both front passengers.

The knee airbags also work together with the frontal airbags and seatbelts to achieve a better distribution of the loads imposed on the body by the safety restraint systems.

The LS460 has crash sensors installed in both B and C pillars.

These crash sensors allow for the most rapid possible activation of side and curtain airbags.

They also allow the system to make a more accurate assessment of which airbags to activate under any impact condition.

The SRS twin-chamber passenger airbag has an advanced shape based on the Lexus Omni-Support concept.

Once inflated, the twin chambers create a depression in the centre of the airbag, effectively cradling areas of the face such as the nose and mouth, while allowing the physical impact of the bag to be dispersed across numerous body contact points.

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LS460 HAS ELECTRO-HYDRAULIC BRAKING SYSTEM


New LS460 features an electro-hydraulic braking system.

The electro-hydraulic brake system reduces overall brake system weight and provides more precise brakeforce distribution.

It optimises the operation of VDiM, Anti-Lock Brakes (ABS), Electronic Brakeforce Distribution (EBD), Brake Assist System (BAS), Traction Control (TRC) and Vehicle Stability Control (VSC) braking functions.

LS460 has 357mm diameter front disc brakes and 335mm discs at the rear, both with spiral fin ventilation architecture.

They are matched to high-friction-coefficient brake pads to further increase judder-free high-speed braking efficiency.

The system generates class-leading stopping power through the adoption of four-piston brake calipers front and rear, both fabricated in aluminium to reduce unsprung weight.

The front pad contact area has been increased by 24 per cent compared with the LS430, and both front and rear pad thickness was increased by 23 per cent to ensure durability.

LS460 has a revised ECB system that incorporates a new ECU with significantly increased processing speed compared with the previous unit.

The revised system improves the control precision and responsiveness of the brake hydraulic pressure.

Pedal feel has been improved with greater rigidity and a reduction in both the variation in braking force and the operational lag time after brake application.

Within the ECB system, independent hydraulic braking power is applied to each of the four wheels.

Once engaged, a sensor detects the amount of force being applied to the brake pedal.

The ECU then calculates and applies hydraulic braking power to each wheel as necessary, adjusting the pressure at the hydraulic source.

Lexus designed LS460 aiming for class-leading braking performance.

The development program focused on optimum ABS performance and the road surface resistance of the 245/45R19 tyres.

In cooperation with Lexus engineers, tyre manufacturers tested two to three times the usual number of prototypes in order to achieve the required road surface resistance - while maintaining the steering stability, ride comfort, and minimal noise and vibration performance appropriate to the Lexus marque.

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LS460 ANTI-THEFT SECURITY


Lexus LS460 was designed to be one of the most theft-proof vehicles in its segment.

Innovations in the new LS include an anti-theft body-tilt sensor connected to the alarm system.

The system has two G-sensors in the centre console, to detect tilt angle in all directions.

It will activate an alarm if the LS460 is tilted through more than 1.7 degrees from a reference angle automatically established when the car is locked.

In addition, LS460 has laminated side windows fitted as standard.

The side door closer incorporates an all-encompassing protective structure.

Both measures ensure maximum protection from forced cabin entry.

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LS460 TECHNICAL SPECIFICATIONS


Click here to access 2007 Lexus LS460 technical specifications

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LS460 TECHNICAL GLOSSARY


WORLD FIRSTS

Eight-speed Automatic Transmission

LS460's newly developed eight-speed automatic transmission has cutting-edge electronics that simultaneously manage the optimum gear selection and engine torque.

Thanks to the widest gear spread versus its volume selling counterparts, the LS460's new transmission provides a competitive level of performance while also holding claim to most economic V8 above 4.0 litres.

Intelligent Powertrain Control System

The Intelligent Powertrain Control system is a new electronic powertrain management system that analyses, prioritises and combines the demands of the transmission and engine system ECUs. It centralises control of the throttle valve and ignition timing via the engine ECU.

The system optimises the speed and smoothness of any gear change and also provides a faster, more precise response to other ECU demands.

VVT-iE (Electric Camshaft Activation)

Integral to the LS460's Dual VVT-i, VVT-iE is a new, electrically controlled, continuously variable valve timing system to the intake camshafts.

Unlike hydraulically controlled systems, the electric motor-driven VVT system will operate across the full engine revolution and temperature spectrum, with a cam response speed of around 50 degrees per second towards the retard phase and 150 degrees per second towards the advance phase.

SEGMENT FIRSTS

D-4S

D-4S is the latest evolution of Lexus' stoichiometric, four-stroke, direct-injection technology.

It features two injectors per cylinder, one installed in the combustion chamber and a second mounted in the intake port.

It combines the strengths of both direct and port injection, for optimum engine efficiency throughout the power band.

Lexus D-4S improves torque by 7.5 per cent across the rev range, while minimising fuel consumption and emissions.

Front Passenger Twin-Chamber Airbag

The SRS Front Passenger Twin-Chamber Airbag features an advanced shape based on the Lexus Omni-Support concept.

Once inflated, the twin chambers create a depression in the centre of the airbag, effectively cradling areas of the face such as the nose and mouth.

This allows the physical impact of the bag to be dispersed across numerous other body contact points.

Neutral Control System

LS460 has a new Neutral Control system with an expanded operational range. It automatically decouples the transmission in the 'D' position when the vehicle is idling at a stop, to reduce engine load and improve fuel efficiency.

Vehicle Dynamics integrated Management (VDiM)

VDiM integrates LS460's active safety systems - Electronically Controlled Brake (ECB) four-wheel independent braking, Anti-Lock Brakes (ABS), Electronic Brakeforce Distribution (EBD), Traction Control (TRC) and Vehicle Stability Control (VSC) - with the Adaptive Variable Suspension (AVS), Electronic Power Steering (EPS) and Variable Gear Ratio Steering (VGRS).

It enhances performance, optimises activation of braking, stability and traction control systems, and improves the vehicle's overall kinetic performance.

Variable Gear Ratio Steering (VGRS)
VGRS employs an actuator attached directly to the Electric Power Steering (EPS) gear, to alter the steering gear ratio according to vehicle speed.

The system can vary the steering gear ratio by up to 31 per cent from 2.4 to 3.5 rotations lock to lock.

The VGRS system promotes driver feedback, with refined steering wheel operation at very low speeds, enhanced steering adjustment response when cornering, and minimal steering input when changing lanes.

Smart Card

The Lexus Smart Card system features a slimline electronic card key, which is four percent smaller than a standard-size credit card.

At just 3.35mm thick, the new card key may be kept in a pocket or wallet throughout any drive, and allows doors and boot to be opened at the touch of handle and the engine to be switched on via a push-start button.

The new LS460 cannot be locked if the Smart Card is detected within the cabin or boot, and a warning message is posted on the Colour Multi-Information Display when the card key battery runs low.

OTHER ADVANCED FEATURES

46-Volt Electric Power Steering (EPS)

The LS460 Electric Power Steer was designed specifically for the vehicle's new front multi-link suspension configuration and tyres.

It features a newly developed step-up DC/DC power converter that increases output from 27 to 46 volts, and a bespoke, high-output brushless motor.

The new system gives LS460 a quicker steering ratio of up to 16.7:1 and a turning circle of 10.8 metres, while providing noise-free operation and seamless, linear feedback, smoothly changing assistance characteristics depending on vehicle speed.

Adaptive Variable Suspension with Vehicle Posture Control

Vehicle Posture Control (VPC) damping force control logic is incorporated within the Adaptive Variable Suspension (AVS) system to minimise the phase difference between body roll and pitch angles during cornering.

This phase synchronisation gives a smooth, controlled roll, with well-matched vehicle response to steering, yaw and roll.

Brake Hold

The Brake Hold function is controlled by the Electrically Controlled Brake ECU and cooperates with the electro-mechanical parking brake.

Once the Brake Hold standby switch activated, Brake Hold is engaged whenever the vehicle stops.

The use of Brake Hold means the driver doesn't have to keep their foot on the brake.

To start the LS460 moving again after a temporary stop, the driver only needs to push the accelerator.

Dual VVT-i

Lexus Dual VVT-i (with VVT-iE) is an optimised low-pressure loss variable intake and exhaust timing system that allows a greater variation in intake/exhaust valve overlap, boosting both low-end and high-end torque as well as contributing to a significant reduction in exhaust emissions.

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