The reason why the door ajar light stays on in a 1999 Nissan Altima could be due to the door switch being stuck. It is stated to spray WD-40 into the latch and that should fix the problem.
Shut the door!
some how the tail light wire is touching the ajar wire
How do you pull the fuse on a 2000 f-150 that controlls the door is ajar light and lights up the cabin and bed light.
On my 2002 sportage 2-door, the door ajar light stays on when the tailgate is not locked. with the key.
If the trunk lid isn't actually ajar, the switch has gone out of alignment, or it broke.
The back hatch may be ajar.
Just to the right of your headlight switch on your dash , is a gauge lighting dimmer wheel switch . Check to see if that has been rotated all the way up. If it has , that turns on the courtesy lights when the doors are closed If you also get a door ajar warning light in your gauge cluster , you probably have a sticking door ajar switch . The door ajar switches are inside the doors , on the backside of the latching mechanism .
Sounds like one of the door switches or wire running to them is shorted to ground, since the indicator and cab light are looking for a ground to come on. Some vehicles will not allow power door locks to work while doors are ajar.
Fix a "door ajar" on Chevy Impala 2003 . Still on doors closed.
They are built inside the latches.
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.
The trunk lid is open or the ajar switch has malfunctioned.The trunk lid is open or the ajar switch has malfunctioned.