Lexus LS
Designed through early 1996, in September 1997 a revised Lexus LS 400 was introduced for the 1998 model year. Changes were a five-speed automatic transmission, increased engine output to 216 kW (290 hp), with variable valve timing (VVT-i), and an added 41 N⋅m (30 ft⋅lbf) of torque. Acceleration times and fuel economy were improved as a result. The suspension and steering also received minor tweaks to improve feel and handling. Stylistically, the vehicle sported a new front fascia, side mirrors, and updated wheels; a rear window diversity antenna replaced the conventional power mast. The cabin received upgrades, including a trip computer, HomeLink, retractable rear headrests, reading lamps, and ultraviolet-tinted glass, while the climate control gained a micron filtration feature with a smog sensor.
In August 1997, the first production laser adaptive cruise control on a Toyota vehicle was introduced on the Celsior version (Japan only). It controlled speed only through throttle control and downshifting, but did not apply the brakes. Because of laser technology limitations, it deactivated in bad weather.
A CD-ROM-based GPS automotive navigation system became an option in the U.S. Added safety features included front side airbags, vehicle stability control and in 2000, brake assist. Low beam HID headlamps were introduced as well. The headlights were also equipped with a programmable delay feature for proximity illumination. In February 2000, the limited "Platinum Series" LS 400 was introduced at the Chicago Auto Show in partnership with American Express. The edition featured most luxury options as standard, along with separate exterior colors, wheels, badging, and two years' no-fee use of an American Express Platinum Card.
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