Get Driving -> Downhill assist control system Guide for Toyota 4 Runner SUV Fifth Generation (2010-2024)

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4-5. Using the driving support systems

Downhill assist control system^

The downhill assist control system helps to prevent excessive

speed on steep downhill slopes. The system will operate when

the vehicle is traveling under 15 mph (25 km/h) with the acceler-

ator and brake pedals released and the transfer mode is in L4

(part-time 4WD models) or L4L (full-time 4WD models).

System 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.

: If equipped

4RUNNER (U)

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4-5. Using the driving support systems

■Operating tips

The system will operate when the shift lever is in a position other than P, how-

ever to make effective use of the system it is recommended to select a lower

shift range.

■The system will not operate when

●Part-time 4WD models: The transfer mode is in H2 or H4.

●Full-time 4WD models: The transfer mode is in H4L or H4F.

■If the downhill assist control system indicator flashes

●In the following situations, the indicator flashes and the system will not oper-

ate:

• The transfer mode is not in L4 (part-time 4WD models) or L4L (full-time

4WD models).

• The shift lever is in P.

• The accelerator or brake pedal is depressed.

• The vehicle speed exceeds approximately 15 mph (25 km/h).

• The brake system overheats.

●In the following situations, the indicator flashes to alert the driver, but the

system will operate:

• The shift lever is in N.

• The “DAC” switch is turned off while the system is operating.

The system will gradually ceases operation. The indicator will flash during

operation, and then go off when the system is fully off.

■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” indica-

tor light will come on. Refrain from using the system until the downhill assist

control system indicator stays on and “TRAC OFF” indicator light turns off.

(The vehicle can be driven normally during this time.)

4RUNNER (U)

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4-5. Using the driving support systems

■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

engine switch is turned to IGNITION ON mode.

●The downhill assist control system indicator does not come on when the

“DAC” switch is pressed.

●The slip indicator comes on.

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.

■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

4RUNNER (U)

Driving -> Downhill assist control system for Your Toyota 4 Runner SUV Fifth Generation (2010-2024)

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