What does 4WD lock mean?

1 Answers
AngelaFitz
07/29/25 4:46pm
4WD lock means that after the four wheels are locked, the power distributed to each wheel is the same, and there is no speed difference between the four wheels. This enhances the vehicle's ability to escape difficult terrain. This mode cannot be used when driving on normal roads because the vehicle cannot turn in this state. Generally, off-road vehicles are equipped with a part-time 4WD system, which offers multiple modes for switching, such as high-range 4WD mode, low-range 4WD mode, and high-range 2WD mode. Some off-road vehicles are also equipped with differential locks. Typical off-road vehicles may have one or two differential locks, while the famous Mercedes-Benz G-Class is equipped with three differential locks. A differential lock is used to lock the differential. If both the front and rear axles have differential locks, after locking them, there will be no speed difference between the two wheels on the front axle or between the two wheels on the rear axle. If there is also a central differential lock, after locking it, there will be no speed difference among all four wheels between the front and rear axles.
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