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Your 4 wheel drive does not work and the light does not go on why is this?In: Differentials |
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Possible loss of vacuum in front hubs
Most 4WD vehicles use automatically locking hubs. By engaging 4WD, a vacuum is formed in the front wheel hubs causing them to lock up into the front differential/transaxle so they can receive power through the transmission. If the seals are leaking, then the vacuum will not form and 4WD will not work.
As for the light not working, I suspect that different models use the 4WD indicator light on the console to either identify when the front differential/transaxle is engaged or when the front wheels are actually engaged. Not having the light on when attempting to engage 4WD can either mean problems with the front locking hub mechanisms or the front differential.
First answer by ID1507001604. Last edit by ID1507001604. Question popularity: 30 [recommend question]
