If you engage differential locks when driving on a firm, high-traction surface, the steerability of the vehicle is severely restricted. You could lose control of the vehicle, especially when engaging on a bend.
When the differential locks are engaged, ABS, 4ETS, ESP® and BAS are deactivated. Because of this, the wheels can lock while braking and the braking distance is increased.
Differential locks improve the traction of the vehicle when driving off-road and fording.
the differential lock for the transfer case disables the rotational speed compensation between the front and rear axles.
the differential lock for the rear axle disables the rotational speed compensation between the wheels of the rear axle.
the differential lock for the front axle disables the rotational speed compensation between the wheels of the front axle.