2003 MERCURY MOUNTAINEER DOOR AJAR INDICATOR STAYS ON

  • Tiny
  • tdg
  • 2003 Mercury Mountaineer

Interior problem
2003 Mercury Mountaineer V8 Two Wheel Drive Automatic 98000 miles

The " door ajar" message stays on even when alll doors closed, believe it probably a sensor in one door, how to check sensor on doors also, " low oil pressure" message also stays on though manual check of oil level indicates full?

Wednesday, July 7th, 2010 AT 4:56 PM

2 Answers

  • Tiny
  • bluelightnin6
  • Expert
  • 17,063 posts

Low oil pressure does not mean the oil level is low, it means the oil pressure is low. It could be a weak / failing oil pump or the gauge may be reading inaccurate. As for the door ajar light, it is a common issue with new model Ford / Mercury trucks and SUVs. One of the door ajar switches have failed or become sticky. Try lubricating all door latches including rear with WD40.

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Wednesday, July 7th, 2010 AT 6:09 PM
  • Tiny
  • P Kroll
  • Member

Once you've determined which door the car thinks is ajar, a liberal dose of canned air (like you clean your computer with) sprayed in the door latch should work wonders. It works on my Ford Explorer.

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Wednesday, July 14th, 2010 AT 9:40 PM

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