Fix a "door ajar" on Chevy Impala 2003 . Still on doors closed.
On my 2002 sportage 2-door, the door ajar light stays on when the tailgate is not locked. with the key.
The system thinks that a door is not shut completely. If all of the doors are shut tight, then a door switch is loose or bad.
If the switch is bad or out of adjustment, then the door ajar light will stay on. The overhead light will not go out, and the security alarm will not set.
Rear gate or door not closed all the way. Slam it shut.
some how the tail light wire is touching the ajar wire
The sensor you are looking for is an integral part of the door latch.
Possible faulty door switch.Try contact cleaner or light grade of lubricant on the switch. Push it i nby hand and see if door ajar light goes out.
a door in your car is not fully shut.
If the door is ajar and light stays on, spray some WD40 into the latch. The door switch is probably stuck. Spray all doors then open and close a few times.
Try spraying WD-40 on the door latch, the part that is on the door itself. The door ajar switch is located in with the latch. Had the same problem, door ajar light on, interior light stays on, and horns toots twice when you lock with remote, to signal door is not closed. Door was shut but truck didn't know it, WD40 fixed it.
The door being open.
the door ajar light is staying on all the time