2005 Lexus LX 470 Owners Manual - Page 305

STARTING AND DRIVING The brake actuator temperature increases during the active traction control system or vehicle stability control system operating. If the brake actuator temperature becomes too high while the active traction control system or vehicle stability 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. 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. 281 In the following cases, contact your Lexus dealer: D The "VSC/TRAC" warning light does not come on after the ignition is turned to on. D The "VSC/TRAC" remains on after the ignition is turned to on. CAUTION Under certain slippery road conditions, full traction of the vehicles and power to 4 wheels may not be maintained, even though the active traction control system is in operation. Do not drive the vehicle under any speed or maneuvering conditions which will cause the vehicle to lose traction. In situations where the road surface is covered with ice or snow, your vehicle should be fitted with snow tires or tire chains. Always drive at an appropriate and cautious speed for the road conditions present.