Sticking door ajar switch ( mounted on the backside of the door latches inside the doors) or something not closed properly. To fix this, spray some WD 40 into the door latch assemblies, (all of them, including the rear hatch) and operate the doors a few times to free up the sensors.
On my 2002 sportage 2-door, the door ajar light stays on when the tailgate is not locked. with the key.
If the door ajar light is coming on in your gauge cluster, and the warning chime is sounding when all your doors, liftgate, and glass hatch are securely shut you most likely have a sticking door ajar switch. The door ajar switches are inside the doors mounted on the latch mechanisms.
check the sensor on the door, its probably bad
spray your door latches with wd40.
Is door ajar light on also?
If your interior light is also on, replace the door switch.
this problem is related to the door ajar switch which is connected to the latch. spray wd-40 into the latch and it should go away.
bad door ajar switch inside one of the doors its in the striker assy
i literally just had the same issue with my 203 explorer, followed the advice given on numerous forums and WD-40'd the hell out of each of the latching mechanisms and it seems just fine now.my lights in lincoln navigator wont go out when I close the doors
I've had that happen in my 2002 mountaineer. what I've found is that if you spray the door latches with wd40 it will clean off the sensors and the door ajar light should go out. but make sure all the doors are shut.
I have a 2003 Explorer and I had the same problem- it also kept my dome lights on. I found a few wires in the door jam broken, once I spliced it back together the light went off and another broken wired controlled the remote mirrors fixed that one while I was at it also
some how the tail light wire is touching the ajar wire