Driving -> Rear differential lock system for Your Toyota 4 Runner SUV Fifth Generation (2010-2024)

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4-5. Using the driving support systems  
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 sur-  
face.  
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 com-  
plete operation. After the rear dif-  
ferential is locked, the indicator will  
stop flashing and remain on.  
To unlock the rear differential,  
press the switch again.  
: If equipped  
4RUNNER (U)  
307  
4-5. Using the driving support systems  
Using the rear differential lock system  
1
Before using the rear differential lock system:  
Stop the vehicle, shift the shift lever to N and shift the front-wheel  
drive control lever into L4 to see if this is sufficient. If this has no  
effect, additionally use the rear differential lock system.  
2
3
4
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.  
4
• 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.  
4RUNNER (U)  
308  
4-5. Using the driving support systems  
WARNING  
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 dif-  
ferential 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.  
4RUNNER (U)