2008 Toyota 4Runner Owners Manual - Page 218

07 12.25 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 "ON". If the indicator light does not come on when the engine switch is turned on, contact your Toyota dealer. The brake actuator temperature increases during continuous operation of the traction control system, the "AUTO LSD" system, the vehicle stability control system and the hill −start assist control system 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 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 slip indicator light will come on and the traction control system temporarily stops operating in order to protect the brake actuator. (Although the 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 slip indicator light goes out. CY16075 TRACTION CONTROL OFF MODE If your wheels get stuck in an 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: Briefly push the "VSC OFF" switch. The "AUTO LSD" and slip indicator lights will come on. The vehicle stability control system is always activated, even if the traction control system is turned off. 176