My Daughters Ranger had an issue with the door ajar light staying on. Turned out that all it needed was a good shot of Tri Flow lubricant (or equivalent) to the door latch mechanism in the door. The sensor is located in this mechanism, and sticks making the dash light stay on. It can be lubed without dissassembly, and it fixed our problem. Good luck.
Monday, January 18th, 2010 AT 12:25 PM