Toyota 4Runner: Rear differential lock system

The rear differential lock system is provided for use only when wheel spinning occurs in a ditch or on a slippery or rugged surface.

The rear differential lock system is effective in case one of the rear wheels is spinning.

Press the switch to lock the rear differential.

At this time, the rear differential lock indicator will flash. Wait a few seconds for the system to complete operation. After the rear differential is locked, the indicator will stop flashing and remain on.

To unlock the rear differential, press the switch again.

Using the rear differential lock system

Before using the rear
differential lock system: Stop the vehicle, shift the shift lever to N and shift the frontwheel drive control lever into L4 to see if this is sufficient. If this has no effect, additionally use the rear differential lock system.

Be sure the wheels have stopped
spinning.

Press the rear differential lock
switch.

Gently depress the accelerator
pedal.

After the rear differential is locked, the indicator will come on.

Unlock the rear differential as soon as the vehicle moves.

To unlock the rear differential, press the switch again.

Locking the rear differential

The following systems do not operate when the rear differential is locked. It is normal operation for the ABS warning light and VSC off indicator to be on at this time.

• ABS

• Multi Terrain ABS

• Brake assist system

• VSC

• Hill-start assist control

The rear differential lock is disengaged when

The front-wheel drive control lever or switch is shifted to H2 or H4.

Never forget to turn off the switch after using this feature.

After unlocking the rear differential

Check that the indicator goes off.

If the rear differential lock indicator flashes rapidly

There may be a malfunction in the rear differential lock system. Have the vehicle inspected by your Toyota dealer immediately.

CAUTION

To avoid an accident

• Do not use the rear differential lock system except when wheel spinning occurs in a ditch or on a slippery or rugged surface. Large steering effort and careful cornering control will be required.

• Do not lock the rear differential until the wheels have stopped spinning.

Otherwise, the vehicle may move in an unexpected direction when the differential lock is engaged, resulting in an accident. This may also lead to possible damage to rear differential lock component parts.

• Do not drive over 5 mph (8 km/h) when the rear differential is locked.

• Do not keep driving with the rear differential lock switch on.