2004 Lexus LS 430 Owners Manual - Page 380

STARTING AND DRIVING Traction control off mode 31L138a 31L344 "Slip indicator light Leave the system on during the ordinary driving so that it can operate when needed. You may hear a sound in the engine compartment for a few seconds just after the vehicle begins to move. This means that the traction control system is in the self-check mode, but does not indicate a malfunction. When the traction control system is operating, the following conditions occur: D The system controls the spinning of the rear wheels. At this time, the slip indicator light blinks. D You may feel vibration or noise in your vehicle, caused by operation of the brakes. This indicates the system is functioning properly. The slip indicator light comes on for a few seconds when the ignition switch is turned to "ON". If the indicator light does not come on when the ignition is turned on, contact your Lexus dealer. 360 If your wheels get stuck in a ditch when you are driving on a severe off road and sand, turn off the traction control system. This system that controls engine performance interferes with the process of freeing your wheels. To turn off: Push "TRAC OFF" switch. The "TRAC OFF" indicator light will come on. The vehicle stability control system is always activated even if the traction control system is turned off. To turn on: Push "TRAC OFF" switch once again. The "TRAC OFF" indicator light will go off.