The Lexus LS is a full-size luxury car serving as the flagship model of Lexus, the luxury division of Toyota. Now in its fourth generation, all LS models have featured V8 engines and rear-wheel drive, with Lexus also offering all-wheel drive, hybrid, and long-wheelbase variants. As the first model developed by Lexus, the LS 400 debuted in January 1989 with the second generation debuting in November 1994. The LS 400 was among the first luxury sedans to feature an automatic tilt-and-telescoping steering wheel with SRS airbag, power adjustable shoulder seat belts, and an electrochromic rear-view mirror. The LS 400 further contained some 300 technological innovations to aid smooth operation and silence, including fluid-damped cabin fixtures, vibration-insulating rubber mounts, and airflow fairings. Keyless entry remote systems are an available option for most Lexus LS 400 cars.