2005 Lexus LS 430 Owners Manual - Page 404

STARTING AND DRIVING "Check VSC" warning message VEHICLE STABILITY CONTROL SYSTEM The vehicle stability control system helps provide comprehensive control of the systems such as anti−lock brake system, traction control, engine control, etc. This system automatically controls the brakes and engine to help prevent the vehicle from skidding when cornering on a slippery road surface or operating steering wheel abruptly. This system activates when the vehicle speed is about more than 15 km/h (9 mph). 31L337a If the vehicle stability control system or the traction control system malfunctions, the master warning light and "TRAC OFF" indicator light come on. At this time a warning tone sounds and the above message appears. If the message appears, the vehicle stability control system and traction control system do not work. Although it is no problem to continue driving, have your vehicle checked by your Lexus dealer as soon as possible. You may hear a sound in the engine compartment for a few seconds just after the vehicle begins to move. This means that the system is in the self−check mode, but does not indicate a malfunction. 365