1999 Montero 4wd indicator module

Taylor1

Observer
I believe I killed the 4wd indicator relay module a few weeks ago. I was shifting between 2wd and 4wd checking movement in driveway. The alternator voltage regulator was having a bad day as well, I've since replaced it. In one shift down to 2wd all dash 2wd 4wd lights went dark and have yet to return. My guess is the higher voltage and quick transition movement was too much. Ive checked the upstream 10A fuse is good. Bulbs also checked out good.

My 99 winter package has the white box MB886391. Does anyone have experience replacing these with used ebay parts?

The part numbers are the same, but are controls and plugs the same in multiple years. Local self service yard has a 2001 montero that will have a module I might grab.


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Last edited:

Taylor1

Observer
Bulbs and fuse checked out good.

Center differential indicator still illuminates normally.

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Taylor1

Observer
2wd indicator lights randomly came back on after driving an hour today. Either stuck relay or stuck sensor maybe?

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