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Ask Chris (aka- Moose) Your Own Question
Chris (aka- Moose)
Chris (aka- Moose), Mercury Technician
Category: Mercury
Satisfied Customers: 43882
Experience:  16 years experience with Mercury
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Mercury Mountaineer I have a bad door ajar switch on my Mercury

Customer Question

I have a bad door ajar switch on my Mercury Mountaineer. I have sprayed wd40 and replaced the switches before. They keep going bad. I just want to disable the door ajar feature altogether and I don't care what else I lose as long as I can lock doors and roll down windows.
Submitted: 5 years ago.
Category: Mercury
Expert:  Chris (aka- Moose) replied 5 years ago.

Hello, I'm Chris.
I will do my best to answer your question fast and accurate using the info you have provided. Thanks for visiting Just Answer.


Since you just want to disable the door ajar feature then you need to access the body control module. Then cut each of the five door ajar switch wires and ground them all to a new chassis ground wire, thus fooling the system that all doors are always shut.



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Customer: replied 5 years ago.
I haven't yet attempted to use this information to make the alteration. The first obstacle I see is: Where's the body control module located on this vehicle?
Expert:  Chris (aka- Moose) replied 5 years ago.
The BCM is in behind the rear quarter trim on the passenger side. If a rear seated passenger on the passenger side pushed there right elbow back and touched the body of the SUV they would be touching the rear quarter trim directly over the BCM.