2008 Toyota Tundra Owners Manual - Page 274

07 11.20 NORMAL DRIVING MODE Leave the system on during ordinary driving so that it can operate when needed. 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 traction control system is in self −check mode, but does not indicate a malfunction. When the traction control system is operating, the following conditions occur: The brake actuator temperature increases during continuous operation of the following systems under conditions such as on slippery roads. D Traction control system D "AUTO LSD" system 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 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 this time, the slip indicator light comes on and the traction control system temporarily stops operating in order to protect the brake actuator. (Although the traction control system does not operate, it is not a problem to continue driving.) The system is automatically restored after a short time and the slip indicator light goes off. XS17010a D The system controls the spinning of the rear wheels (two−wheel drive models) or 4 wheels (four −wheel drive models). At this time, the slip indicator light blinks. and only one of the rear wheels begins to spin,which also may the rear wheels.TRACTION CONTROL OFF MODE (two−wheel drive mode only) When getting the vehicle out of mud or snow, etc., and only one of the rear wheels begins to spin, it may be beneficial to turn off the traction control system. This system which also controls engine performance may interfere with the process of freeing the rear wheels. 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 engine switch is turned to the "ON" position. If the indicator light does not come on when the engine switch is turned on, contact your Toyota dealer. 244 2008 TUNDRA from Apr. '08 Prod. (OM34477U)