The Lexus LS (XF40) is the fourth generation of the Lexus LS line of full-size luxury sedans. Lexus debuted the model line at the 2006 North American International Auto Show, with variants including the standard wheelbase LS 460 (USF40) and long wheelbase LS 460 L (USF41); the chassis codes (USF40/USF41) are derived from the fourth generation XF40 platform code and UR series engine designation. In development from 2001, the final design was selected for the V8 models in late 2003, with the hybrid variant's design finalized in 2004. Introduced at the 2006 New York International Auto Show, all-wheel drive hybrid models, the standard wheelbase LS 600h (UVF45) and long wheelbase LS 600h L (UVF46), joined the lineup in the 2008 model year. The LS 460 and LS 460 L models feature a 4.6 L UR series V8 and an 8-speed automatic transmission, while hybrid models are powered by a 5.0 L UR series V8 engine equipped with electric motors, with a continuously variable transmission and all-wheel drive. All-wheel drive versions of the non-hybrid LS 460 (USF45) and LS 460 L (USF46) models were introduced at the 2008 Moscow International Automobile Salon. The XF40 received updates for the 2010 and 2013 model years.
Since its introduction, multiple fourth generation Lexus LS models have been sold worldwide, including standard, long wheelbase, hybrid, and all-wheel-drive versions. At its introduction, the LS 600h L became the most expensive sedan produced in Japan, with a sticker price of approximately US$125,000.
The fourth generation Lexus flagship was the first LS to receive the styling cues of Lexus' new design direction, L-finesse. The design features body forms running the length of the car, with wheel arches, arrow-shaped chrome trim, a grille set slightly below the level of the headlamps, and a fastback rear decklid. Compared to the previous generation LS, the forward and aft coefficient of lift was reduced to 0.02 and 0.01, respectively, while aerodynamic drag remained the same (Cd 0.26). Exterior-wise, the LS 460 L has a similar profile as the LS 460, with identical overhangs in both front and rear; the rear passenger doors are noticeably longer in the stretched model. Design patents for the vehicle's exterior design, including front and rear fascias, side windows, and lights, were filed with the United States Patent and Trademark Office on 3 October 2005.
Additional details of the design include adaptive headlamps housed in hand polished surrounds designed to look like Baccarat crystal tumblers, chrome exhaust vents integrated into the rear bumper, and "L"/"S" curve shapes. The fenders are produced using a 5200-ton press, which when introduced made it the world's strongest stamping press. The model's new paint finish is applied to bare-metal body panels which are first prepared by a six-axis buffing robot with 3D movements, the entire paint finish is wet-sanded twice by hand between layers of paint application. Both front and rear window frames are each constructed from a single die-cast zinc piece, plated in chrome and then polished by hand.
Interior features include a 19-speaker Mark Levinson Reference Surround Sound System, Gracenote, and a 30 GB HDD with room for 2,000 songs. The fifth generation HDD-based Lexus navigation system features XM NavTraffic, a real-time traffic monitoring system with dynamic rerouting (in the U.S., and similar systems elsewhere). Keyless SmartAccess with push-button start, Optitron instrument panel with TFT multi-information display, auxiliary MP3 player input, and a 5-position tire pressure display are standard equipment. A 24-hour concierge/emergency aid service, Lexus Link (later Lexus Enform), was offered in North America, with the analogous G-Link system offered in Japan. Japanese market LS sedans also feature MiniDisc compatibility, television reception, onboard security surveillance cameras, and remote cellphone access.
Comfort and convenience features range from a 16-way adjustable heated and cooled driver seat to a rear cabin with power reclining memory seats, a cool box, and five powered sunshades. Certain versions of the LS can be equipped with climate control features such as first automobile ceiling air diffusers, air purifiers, air ionisers, and four-zone climate control with infrared body temperature sensors. The leather on the seats and steering wheel are made smoother than previous models, due to being buffed longer in production, the steering wheel is buffed for three hours and incorporates a whip stitching pattern. Upgraded materials (such as a headliner made out of ecsaine, a suede-like material used by couturier Yves Saint-Laurent) are offered for the interior. Inside the wood veneer trim has been laminated to aluminum instead of fiberglass by Yamaha's piano craftsmen. A special-order "Executive" seating package on long wheelbase models includes a rear seat DVD entertainment system with ceiling fold-down LCD screen, fixed center console with a swivel tray table, and a passenger-side shiatsu and shoulder massaging ottoman seat.
The Intelligent Parking Assist System feature (also called Advanced Parking Guidance System) can parallel-park or reverse-park the LS into a preselected space with minimal brake input at the push of a button. This feature utilizes the backup camera and parking sensors. Other drive-assist features include Dynamic Radar Cruise Control, which can accelerate and brake while monitoring traffic (similar to Mercedes-Benz's Distronic Plus), a Brake Hold button, which prevents creeping forward motion when the driver's foot is off the brake pedal, and the Automatic Parking Brake, which can engage the parking brake simultaneously whenever the transmission is shifted to Park.
The Lane Keeping Assist (not available on the LS 600h due to conflict with LED headlamps) feature includes the Lane Departure Warning (LDW) and Lane Keep (LK) systems. When activated, the LDW system will issue an audiovisual warning and LK will apply a brief corrective steering response when veering motion is detected. The LK system (activated when the radar cruise control is engaged) will actively provide continued steering assist.
Debuted on the fourth generation Lexus LS, the next-generation Pre-Crash System (Pre-Collision in the U.S.) offers forward and rear protection. The Frontal Pre-Crash system will activate a warning buzzer and red dash lights to alert the driver if a potential hazard is detected in the vehicle's path. If the system detects a potential collision, the system will adjust steering and braking responsiveness. If a collision is determined to be unavoidable, the seatbelt pretensioners will activate, and the brakes will automatically engage to slow the vehicle. The Rear Pre-Crash system, the first active rear collision safety feature in an automobile, utilizes trunk-mounted obstacle detection and warning systems; if a rear collision is deemed unavoidable, sensor-equipped Pre-Crash Intelligent Headrests in the front seats will adjust position upwards up to 25 mm (0.98 in) and forwards up to 60 mm (2.4 in) to cradle the head during impact, reducing whiplash. The rear Pre-Crash system in the U.S. market waited for FCC regulatory approval. For 2010, the LS hybrid further incorporated an all-TFT instrument panel display, which featured the addition of a night vision capability with pedestrian detection.
A new active safety feature called the Driver Monitoring System debuted on the LS 600h L sedan. The Driver Monitoring System uses a CCD camera placed on the steering column to track driver attentiveness by eye tracking. Using infrared detectors, this system will respond if a collision is imminent and the driver not paying attention (a warning alarm will sound followed by a brief automatic application of the braking system).
Standard active safety features also include electronically controlled braking (ECB), anti-lock brakes (ABS), and traction control (TRAC). The stability/traction control system, Vehicle Dynamics Integrated Management (VDIM) (with disable button), incorporates Electronically Controlled Brake (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), Electric Power Steering (EPS) and Variable Gear Ratio Steering (VGRS) systems. VDIM integrates these systems to improve vehicle responsiveness to driver input and prevent loss of control. An Emergency Steering Assist system acts to minimize body roll and improve vehicle responsiveness in sudden maneuvers. This system reduces the steering gear ratio and prompts the suspension to adopt stiffer settings, helping make emergency maneuvers more stable and controlled. Passive safety features include eight to ten standard airbags (depending on model, up to eleven with upgraded rear seats), passenger detection systems, front and rear crumple zones, three-point seatbelts with pretensioners and force limiters, and a reinforced steel body. Dual-stage driver and twin-chambered front passenger airbags, front knee airbags, full-length side curtain airbags, and Thorax-Abdomen-Pelvis (TAP) airbags are also installed.
The 2009 (2010 model year) refresh added redesigned forward and rear fascias, updated interior, an active Eco Mode energy-saving capability, and redesigned chassis and drivetrain components to the non-hybrid models. The interior received additional chrome trim for the center console, an optional DVD entertainment system behind the center armrest (versus the ceiling drop-down version available before), and in certain markets, an all-digital instrument panel with night vision capability. The "Executive" seating option gained a five-seat configuration, and vibrating massage for both outboard rear seats was introduced. The exterior paint gained a self-repairing clear coat.
Introduced in 2009 for the 2010 model year was the LS 460 Sport, a performance package available only on the rear-wheel drive standard wheelbase model, equipped with a sport-tuned air suspension, Brembo brakes, forged wheels, paddle shifters, body kit, and a unique two-tone interior. The LS 460 Sport featured the Sport Direct Shift transmission, also found in the Lexus IS F, which allows for faster shift times. The torque converter can lockup from 2nd to 8th gears.
Also debuting in late 2009 for the 2010 model year was the revised LS hybrids, including refreshed front and rear fascias, a four-bar grille, the addition of side mirror turn signals, and new wheel designs.
The 2010 models also were the introductory year for the LS hybrid in the Middle East and Indonesia. For the Japanese market, the 2010 models saw the introduction of an interior customization program called "L-Select", which allowed owners to have hybrid and non-hybrid LS models built to their material trim specifications.
Lexus released an official photograph of its restyled XF40 series in July 2012 which will be released for the 2013 model year. The substantial update incorporates the new Lexus corporate fascia, comprising the "spindle" grill and consequently sees the fitment of a redesigned hood, reshaped front fenders and headlamps, plus a new bumper. These styling revisions see the retention of the side profile and doors, including rear fenders. Thus, the newly designed tail-lamps, trunk lid, and rear bumper are only partially modified. The sport package, still only offered on the standard wheelbase variant but now including all-wheel drive as well as rear-wheel drive, is now known as the F-Sport.
Reportedly, the refresh involved 1000 engineers and replaced 3000 out of 6000 new parts.
Introduced at the 2006 North American International Auto Show, the redesigned LS was based on the LF-Sh concept vehicle and used an all-new platform. The initial models, the LS 460 (USF40) and long wheelbase LS 460 L (USF41), featured a brand-new 4.6 L 1UR-FSE V8 producing 283 kW (380 hp; 385 PS) and 498 N⋅m (367 lb⋅ft) of torque. The LS 460 introduced the first production eight-speed automatic transmission and an automatic parking system.
The LS 460 and LS 460 L first went on sale in Japan on 19 September 2006. It was the first time the car was sold under the Lexus marque in Japan, and identified the next phase of Lexus' launch as a global premium brand. Its exclusivity is shared with the Toyota Century and the Toyota Crown Majesta, which are only sold at dedicated Toyota Japanese dealerships called Toyota Store .
Complete article available at this page.
