2003 Lexus GX 470 Owners Manual - Page 337

STARTING AND DRIVING Depressing the brake pedal repeatedly may turn on the light. It is normal if it goes out after a few seconds. The brake actuator temperature increases during continuous operation of the above mentioned systems such as on slippery roads. If the brake actuator temperature becomes too high while any of the systems is operating, a buzzer will start to sound intermittently to indicate that the active traction control system can no longer operate. In this case, immediately stop your vehicle at a safe place. If the system continues to operate, the buzzer sound changes from intermittent to continuous. (The continuous buzzer sounds for about 3 seconds.) At the time, the "VSC TRAC" warning light will come on and the active traction control system temporarily stops operating in order to protect the brake actuator. (Although the active traction control system does not operate, there is no problem to continue your driving.) The system will be automatically restored after a short time and the "VSC TRAC" warning light goes out. If the light comes on while driving, the active traction control system does not work. However, as normal braking operates when being applied, there is no problem to continue your driving. In the following cases, contact your Lexus dealer: D The warning light does not come on after the ignition key is turned to "ON". D The warning light remains on after the ignition key is turned to "ON". D The warning light comes on while driving. 323 VEHICLE SKID CONTROL SYSTEM The vehicle skid control system helps provide integrated control of the systems such as anti−lock brake system, traction control, engine control, etc. This system automatically controls the output of the brakes or engine to help prevent the vehicle from skidding when cornering on a slippery road surface or operating steering wheel abruptly. The vehicle skid control activates when the vehicle speed is more than following speed: Four−wheel drive control lever in "H" ...15 km/h (9 mph) Four−wheel drive control lever in "L" ...30 km/h (19 mph) You may hear a sound in the engine compartment for a few seconds when the engine is started or just after the vehicle begins to move. This means that the system is in the self−check mode, but does not indicate a malfunction. CAUTION D Do not rely excessively on the vehicle skid control system. Even if the vehicle skid control system is operating, you must always drive carefully and attentively to avoid serious injury. Reckless driving will result in an unexpected accident. If the slip indicator light blinks and an alarm sounds, special care should be taken while driving.