Lexus - Design and Technology

Design and Technology

Lexus design has traditionally placed an emphasis on targeting specific vehicle development standards. Since the marque's inception, design targets have ranged from aerodynamics and ride quality to interior ergonomics. The backronym "IDEAL" ("Impressive, Dynamic, Elegant, Advanced, and Lasting") is used in the development process. Each vehicle is designed according to approximately 500 specific product standards, known as "Lexus Musts," on criteria such as leather seat stitching. Design elements from the marque's concept vehicle line, the LF series (including the 2003 LF-S and 2004 LF-C), have been incorporated in production models.

Vehicle cabins have incorporated electroluminescent Optitron gauges, SmartAccess, a smart key entry and startup system, and multimedia features. Beginning with the 2010 RX and HS models, the Remote Touch system, featuring a computer mouse-like controller with haptic feedback, was introduced; other models have featured touchscreen controls (through the 2009 model year) as a navigation screen interface. In 1989, Lexus became among the first premium car marques to equip models with premium audio systems, in partnership with stereo firm Nakamichi. Since 2001, optional surround sound systems are offered via high-end audio purveyor Mark Levinson. For reduced cabin noise, the first LS 400 introduced sandwich steel plating, and later models added acoustic glass. In 2006, the LS 460 debuted the first ceiling air diffusers and infrared body temperature sensors in a car. Telematics services include G-Book with G-Link in Asia and Lexus Enform in North America.

In 2006, Lexus incorporated the first production eight-speed automatic transmission in an automobile with the LS 460, and the gearbox was later adapted for the GS 460 and IS F models. Continuously variable transmissions, regenerative brakes, and electric motors have been used on all Lexus hybrid models. In 2007, Lexus executives signaled intentions to equip further models with hybrid powertrains, catering to demands for a decrease in both carbon pollution and oil reliance. Hybrid models have been differentiated by separate badging and lighting technology; in 2008, the LS 600h L became the first production vehicle to use LED headlamps.

Safety features on Lexus models range from stability and handling programs (Vehicle Stability Control and Vehicle Dynamics Integrated Management) to backup cameras, swivel headlights, and sonar warning systems. The Lexus Pre-Collision System (PCS) integrates multiple safety systems. In 2007, Lexus introduced the first car safety systems with infrared and pedestrian detection capabilities, lane keep assist, a Driver Monitoring System with facial recognition monitoring of driver attentiveness, and rear pre-collision whiplash protection, as part of the LS 460 PCS. As a safety precaution, Lexus GPS navigation systems in many regions feature a motion lockout when the vehicle reaches a set speed; to prevent distraction, navigation inputs are limited, while voice input and certain buttons are still accessible. This safety feature has attracted criticism because passengers cannot use certain functions when the vehicle is in motion. Pre-2007 models came with a hidden manufacturer override option, and updated European models allow operation in motion.

Production models in development have included convertibles, crossovers, and dedicated hybrids. Under the F marque, Lexus plans to produce high-performance vehicles with its first expressions being the IS F and the LFA. Lexus officials have also discussed standard production model usage of varying platforms. The LS flagship uses a dedicated platform, while the entry-level Lexus ES had been criticized for being too similar to the Toyota Camry, with which it shared platforms until its sixth generation, in both styling and powertrain design. The Nürburgring test track in Germany has also seen Lexus prototype testing.