Driver-Controlled Electronic Locking Differential
Note:   Never use the differential lock at vehicle speeds above 25 mph (40 km/h).
Some drive axles have a driver-controlled differential lock. The differential lock can lock or unlock the differential when your vehicle is moving or stopped. When you require extra traction, the differential lock provides full power to both wheels.
When you lock the differential, your vehicle’s turning radius increases (under-steer).
Take care to avoid sudden accelerations when both drive wheels are on a slippery surface.
WARNING   WARNING:  Sudden acceleration on slippery surfaces could cause the wheels to spin, the vehicle to turn sideways on a crowned road surface or in a turn, possibly resulting in loss of vehicle control and personal injury.

Activating the Electronic Locking Differential
You can lock and unlock the differential when your vehicle is moving at a constant speed of less than 25 mph (40 km/h) and while the wheels are not slipping. Do not lock the differential when your vehicle is traveling down steep grades and when traction is minimal.
The differential lock and differential lock light automatically disengage at speeds above 25 mph (40 km/h). The differential lock remains off until either you restart your vehicle, or you turn the differential lock switch off then back on.
Servicing a Vehicle with an Electronic Locking Differential
Turn the engine off and raise all drive wheels of the locker differential axle to prevent your vehicle from moving when servicing the wheels, tires or brakes. Axles equipped with a driver-controlled differential deliver power to both wheels even when only one wheel is on the ground.
WARNING   WARNING:  Failure to raise all drive wheels with this type of differential could cause the vehicle to move unexpectedly, resulting in property damage, personal injury or death.

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