After opening/closing all 4 doors tonight the door ajar and dome lights stay on. The dome light goes off after a few minutes of driving but the door ajar light stays lit. Anyone know what causes this and how to fix it? Thanks.

 

Spray your door latches with WD40. Common problem, easy fix. Spray them all unless you know which is the problem, spray them good work latch several time. Did mine 3 years ago and not a problem since.

 

I concur. Spray door switch with lube.

 

yes, the wd40 works like a charm. I've done it on 2 of my trucks and it fixed the problem.
Luckily I had read that on here because the Ford dealer of course wanted to take the door apart and change the switch.

 

I think the door ajar light might be what brought me the this in the first place over 3yrs ago.

 

Man am I glad I found this site and a lot of these forums! I just bought a 97 Ranger from a co-worker. Looks like the fuse had been pulled from the panel to keep the interior lights from coming on. And then I learned why - the interior lights stayed on no matter what I did. I even took out the whole light "fixture", learned that two of the screws make the electrical contact with the wiring, thought that the internal switch was defective and thought "how the H@$$ am I going to fix this??" I am going out to the truck now and spray it good with WD-40 (the cure all!) and see how it does overnight! I'll let you know how it works out. Wish me luck everyone! -
Doug

 

Good post for me to find- I had this same issue on m new to me 99 tonight. WD-40 is going out with me tomorrow to fix this problem when I pull the front tires off to pull the rotors- this is why I LOVE this site!

 

My switches work, the front two are new and the rears don't activate the light. However my door ajar light is always on, unless I open both front doors.

The switches are pretty easy to replace and aren't that expensive. I'd suggest replacing them when you go in for the door lock actuators.

 

Happy to report that it worked like a charm! I checked the small rocker switches in each door this morning and could see that their position had shifted from where they were last night - which was a good sign! I screwed the interior light unit all the way back in today, and within a minute the delayed timer (my Taurus does this too) shut the lights off. Like many others who have posted in other forums, there's an audible "click" from the relay under the dash and the light goes off. Thanks everyone for the extremely helpful and extremely simple solution!