Toyota 4Runner manuals

Toyota 4Runner: Active traction control system

The active traction control system automatically helps prevent the spinning of 4 wheels when the vehicle is started or accelerated on slippery road surfaces.

System operation

Part-time 4WD models:


Stop the vehicle, shift the shift lever to N and shift the frontwheel drive control lever into L4.

Full-time 4WD models:

Stop the vehicle, shift the shift lever to N and then push and turn the four-wheel drive control switch to L4L.


Press the “A-TRAC” switch to activate the system.

At this time, the “A-TRAC” indicator will come on.

To cancel the system, push the switch again.

When the active traction control system is operating


If all wheels spin, the slip indicator flashes to indicate that the active traction control system has been engaged.

When the rear differential is locked (vehicles with a rear differential lock system)

The active traction control system is activated only when vehicle speed is less than 4 mph (6 km/h).

Sounds and vibrations caused by the active traction 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 the system.

• Vibrations may be felt through the vehicle body and steering. This may occur when the system is operating.

If the brake system overheats

The system will cease operation and a buzzer will sound to alert the driver.

At this time, the “A-TRAC” indicator will go off and the “TRAC OFF” indicator will come on. Stop the vehicle in a safe place. (There is no problem with continuing normal driving.) The system will be automatically restored after a short time.

CAUTION

The active traction control system may not operate effectively when

Directional control and power may not be achievable while driving on slippery road surfaces, even if the active traction control system is operating.

Do not drive the vehicle in conditions where stability and power may be lost.

Shifting between H4L and L4L
Shifting from H4L to L4L Stop the vehicle completely and continue to depress the brake pedal. Shift the shift lever to N. Push the “UNLOCK” button and then push and turn the fourwheel dri ...

AUTO LSD system (2WD models)
The AUTO LSD system aids traction by using the traction control system to control engine performance and braking when one of the rear wheels begins to spin. The system should be used only when wh ...

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