General Ford Ranger Discussion General discussion of the Ford Ranger that does not fit in any other sub-forum.

Dome light came on for no reason

  #1  
Old 03-07-2019
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Posts: 4
Dome light came on for no reason

I have 01 ranger edge. My truck has been parked since yesterday. I havenít started it or even been in it today. Itís currently 11:30 at night, and my dome light came on for no reason whatsoever. I believe someoneís been trying to get in my truck but, Iím not sure. My dome light usually stays on for about 10 mins or so after I shut the truck off. Probably has a bad door sensor. Tried all the tricks to get the door ajar light to go off and none of em worked, but anyway, I donít understand why the dome light would turn on all of a sudden.
What do you guys think.
 
  #2  
Old 03-08-2019
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Join Date: Jan 2014
Location: Vancouver, BC
Posts: 12,190
You need to replace the door switch not all that hard to do

There is a Battery saver relay that will shut off power to most lights after 20minutes or so of Key OFF and no activity
But door switch activates battery saver relay to turn dome light on again because it thinks YOU have opened the door, so everything "wakes up"

Maybe some one tried to open the door and that caused the switch to activate battery saver relay, hard to say, could also just be a change in the weather, lol, a bad switch has no steady open or closed, thats why its called a bad switch

The switch is located at the bottom of the door latch, so water can run down inside it, so freezing temps can cause all sorts of issues with these switches
 
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