What to know about the Front Axle Engagement Switch:
The front axle engagement switch is what operates the actuator on your 4×4 vehicle, informingit to engage the front differential. It is usually situated on the dash of your vehicle, and when you turn it on, your four wheel drive becomes engaged. This is called an electronic four wheel drive system, as opposed to a manual system which is worked by means of a lever, similar to a gear shift that is positioned on the floor of the vehicle.
Selected drivers prefer the manual system, because the automatic system can sometimes take several seconds to engage. If it doesn’t engage at all, the problem could be in the front axle engagement switch.
Facts to Note:
If your front axle engagement switch fails, the delay in engaging the axle can result in your car being stuck in mud, sand or snow.
How to Fix:
The faulty front axle engagement switch is known
The faulty front axle engagement switch is removed
The new front axle engagement switch is fitted
The switch operation is checked before removing off of jack stands
The vehicle is road tested for proper four wheel drive operation
The front axle engagement switch is not serviced as part of regular upkeep. It is possible for the switch to wear out from use, or for the switch to fail unexpectedly. If you suspect the front axle engagement switch is the reason your four wheel drive will not engage, have one of your expert mechanics check the system and replace the switch if necessary.
Common symptoms indicating you may need to change the Front Axle Engagement Switch:
Four wheel drive takes longer than usual to engage
Four wheel drive won’t engage at all
Importance of this service:
If you’re just driving on pavement in good road conditions, this problem is not serious. However, if you live in an area with high levels of snowfall, or if you’re an off-road enthusiast, you should avoid situations where you’re likely to need the four wheel drive until you have the front axle engagement switch changed.