On my 02 grand caravan the door ajar light will come on for no reason when all doors are closed properly & will then turn on interior lights.On a windy day when it did this while parked & locked it actually set off the alarm repeatedly.Where is the door ajar sensor?I cannot find it anywhere?
Its a thick pin surrounded by a rubber ring/bellows that is in the doorframe of each door. Each pin operates a switch. When the door closes it presses the pin in and when it opens the pin slides out so it protrudes into the door frame. Open each door one at a time and press in the pin with something strong like a shoe heel, this simulates that door being closed. Do it several times, till you find which switch is not working all the time. Change that switch by removing the rubber surround and unscrewing its fasteners.
SOURCE: Interior Lights and Door Ajar light stay w/beeping noise.
Try spraying WD-40 into the door latching mechanism (door side). I learned this fix after two battery replacements, but have only had to spray twice in the more than seven years of ownership
SOURCE: 2003 Explorer door ajar light stay on when all doors are closed
I had this problem on my 2003 explorer and took WD40 and gave the lock mechanism a good dose where it meets the clasp on the door jam. Then open and close the doors a couple of times to get them working. They get gummed up and sometimes have a tendency to stick.
SOURCE: "Door Ajar" signal on dash panel stays on even when doors are clo
there should be a switch mounted( or more than one) in the door jamb that tells the car when the car door is open...i will probably look like a little plastic plunger...might be broken off or bad internally
SOURCE: Explorer alarm going off randomly; additional electrical isues
Open drivers door and look at the hinge area. You will see a black rubber accordion looking tube going from the door to the a-pillar. This is the protector for the wiring harness. Wiggle it and see if this recreates your concern. If it does then pop it loose at both ends so you can inspect the wiring.Check each one carefully,feel them and tug on them.You will be looking for one that the wire inside the wiring insulation has broken,the two wires to really look at closley are the YE/BK and BK .
It may also possibly be a door ajar switch sticking and for this take some WD40 and shoot some in each latch on the side of the door and open and close the door several times and this usually un-sticks it.
SOURCE: 2003 Volkswagen Jetta Door Ajar Light wont turn off and car alarm
The problem you are experiencing is the drivers side interior light switch is not working. This is usually found in the door latch on later model cars and usually requires the complete latch mechanism changing. However it would pay to check that your car doesn't have a pin switch fitted in the pillar.Unfortunately I think you have the former.
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