Toyota 2015 Hilux Owner's Manual page 277

Using the rear differential lock system
Automatic transmission
4WD models only: Before using the rear differential lock system, try
1
turning the front-wheel drive control switch to L4. If this is not suffi-
cient, use the rear differential lock system as well.
Be sure to stop the wheels.
2
Press the rear differential lock switch.
3
Gently depress the accelerator pedal.
4
After the rear differential is locked, the indicator will come on.
Unlock the rear differential as soon as the vehicle moves.
Manual transmission
4WD models only: Before using the rear differential lock system, try
1
turning the front-wheel drive control switch to L4. If this is not suffi-
cient, use the rear differential lock system as well.
Be sure to stop the wheels.
2
Depress the clutch pedal.
3
Press the rear differential lock switch.
4
Slowly release the clutch pedal.
5
After the rear differential is locked, the indicator will come on.
Unlock the rear differential as soon as the vehicle moves.
4-5. Using the driving support systems
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