For 2001, Toyota's luxury division introduced the successor to the 1990-2000 LS 400 sedan, which had been known for hushed accommodations, V8 muscle, and Camry-like dependability. Named for its new 4.3-liter V8, the new second-generation LS 430 sedan offered greater interior space, thanks to a taller roofline and a wheelbase 3 inches longer than its predecessor's. Horsepower remained at 290, but the new LS engine delivered more torque for improved throttle response. A five-speed automatic transmission was used. Rather than continuing the prior one-model lineup, Lexus offered a base model, a base sedan with sport suspension, and an Ultra-Luxury variant. All had side curtain airbags, front lower-body side airbags, high-intensity-discharge headlights, leather upholstery, and an antiskid control system. An available Lexus Line assistance service was provided, in conjunction with the similar GM OnStar system. Antilock four-wheel disc brakes were standard. Sport-suspension versions of the rear-drive four-door got tauter suspension tuning and 17-inch wheels, instead of the usual 16-inchers. Ultra-Luxury models included a dual-mode air suspension, navigation system, Mark Levinson audio system, laminated side glass, power door closers, heated/cooled front seats, and upgraded leather/wood trim with a suede headliner. In addition, the LS featured rear audio and climate controls, a refrigerated armrest, power sunshade, and manual side window shades. Seat adjusters included memory, heat, and massage functions. The LS 430 also offered front and rear parking assistance and laser-operated cruise control, which could maintain a set distance from the vehicle ahead.