Downhill assist control system (AWD vehicles) The downhill assist control system helps to prevent excessive speed on steep downhill slopes. The system will operate when the vehicle is traveling under 18 mph (30 km/h) with the accelerator and brake pedals released. Warning: When using downhill assist control system Do not rely overmuch on the downhill assist control system. This function does not extend the vehicle’s performance limitations. Always thoroughly check the road conditions, and drive safely. Downhill assist control system indicatorSystem operation Press the DAC switch. The downhill assist control system indicator will comes on and the system will operate. When the system is in operation, the slip indicator will flash, and the stop lights/high mounted stop lights will be lit. A sound may also occur during the operation. This does not indicated a malfunction. Turning off the system Press the DAC switch while the system is in operation. The downhill assist control system indicator will flash as the system gradually ceases operation, and will turn off when the system is fully off. Press the DAC switch while the downhill assist control system indicator is flashing to start the system again. Note: Operating tips The system will operate when the shift position is in a position other than P or N. If the downhill assist control system indicator flashes In the following situations, the indicator flashes and the system will not operate: The shift position is in P. The vehicle speed exceeds approximately 18 mph (30 km/h). The brake system overheats. In the following situation, the indicator flashes to alert the driver, but the system will operate: The shift position is in N. The system will gradually ceases operation. The indicator will flash during operation. When the downhill assist control system is operated continuously This may cause the brake actuator to overheat. In this case, the downhill assist control system will stop operating, a buzzer will sound and the downhill assist control system indicator will start flashing, and the “ TRAC OFF” indicator light will come on. Refrain from using the system until the downhill assist control system indicator stays on and the “ TRAC OFF” indicator light turns off. (The vehicle can be driven normally during this time.) Sounds and vibrations caused by the downhill assist control system A sound may be heard from the engine compartment when the engine is started or just after the vehicle begins to move. This sound does not indicate that a malfunction has occurred in downhill assist control system. Either of the following conditions may occur when the downhill assist control system is operating. None of these are indicators that a malfunction has occurred. Vibrations may be felt through the vehicle body and steering. A motor sound may be heard after the vehicle comes to a stop. System malfunction In the following cases, have your vehicle checked by your Toyota dealer. The downhill assist control system indicator does not come on when the power switch is turned to ON. The downhill assist control system indicator does not come on when the DAC switch is pressed. The slip indicator comes on. Warning: The system may not operate on the following surfaces, which may lead to an accident causing death or serious injury Slippery surfaces such as wet or muddy roads Icy surface Unpaved roads