2002 Lexus LX 470 Owners Manual - Page 242

STARTING AND DRIVING You may hear a sound in the engine compartment for a few seconds when the engine is started or just after the vehicle is started. This means that the active traction control system is in the self-check mode, and does not indicate malfunction. When the active traction control system is operating, you may feel vibration or noise of your vehicle, caused by operation of the brakes. This indicates the system is functioning properly. When getting the vehicle out of mud or new snow, etc., the active traction control system will help operate to prevent the wheels from spinning. The brake actuator temperature increases during the active traction control system or vehicle skid control system operating. If the brake actuator temperature becomes too high while the active traction control system or vehicle skid control system 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 sound will stop after 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 "VSC/TRAC" warning light goes off if the accelerator pedal is released. When the "ABS" warning light comes on, the active traction control system is not operating. The "VSC/TRAC" warning light will come on when the ignition key is turned to "ON", and will go off after a few seconds. "Active traction control system failure warning This light warns when there is a problem somewhere in the active traction control system or vehicle skid control system. If the "VSC/TRAC" warning light comes on, have your vehicle checked by your Lexus dealer as soon as possible. The "VSC/TRAC" warning light may stay on for 60 seconds after the ignition key is turned to the "ON" position. It is normal if it goes off after a few seconds. Depressing the brake pedal repeatedly may turn on the "VSC/TRAC" warning light. It is normal if it goes off after a few seconds. When the "VSC/TRAC" warning light comes on, the active traction control system is not operating, but there is no problem if you continue to drive. 226 31X064b