On my 2002 sportage 2-door, the door ajar light stays on when the tailgate is not locked. with the key.
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.
bad door ajar switch inside one of the doors its in the striker assy
check the sensor on the door, its probably bad
Because one of your door sensors are broken.
Ajar is the term for a door that is slightly open.
they are incorporated into the door latches ,if your door ajar stays on one trick is to soak the latches down with wd-40 and keep opening and closing the doors and it should go off..
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.
broken or stuck sensor... bad thing... easiest is to replace whole lock...
The "Door Ajar" warning means your door is not shut all the way.
Close it hard