check the sensor on the door, its probably bad
Fix a "door ajar" on Chevy Impala 2003 . Still on doors closed.
If your interior light is also on, replace the door switch.
Better than disconnecting that most irritating noise, you can easily fix the cause of it going off.The "Related Questions" below has a great round-up of ways to deal with the false door-ajar signals...
add a couple layers of tape where the switch hits the door jamb. the tip of the switch is worn down.
There are located inside the door lock. Spray WD-40 on all door jams. This will fix any interior lights from staying on.
spray your door latches with wd40.
I had the same problem with my 98 Ford Expedition XLT. I sprayed WD-40 on all the door jams including the hatch. It fix problem been 3 years now.
the door ajar switch is Incorporated into each door latch if you have a problem with the door ajar light staying on along with the interior and running board lights spray each latch including the back glass and door latches and open and close each door several times this should fix the problem good luck
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.
dirt gets into the door ajar switch, located on the backside of the door latch. To fix it, usually all yo have to do is go around to all the doors, spary a whole bunch of rustt penetrant like WD-40 into each latch mechanism, and open and close the door a whole buncha times. That usually knocks the dirt out of the switches.
Fuses are illustrated and detailed in the Owners Manual.Also, there is a very common problem with false door ajar sensor warnings on the Taurus-Sables.See "Related Questions" below for pages of helpful information on finding online Owners Manuals and how to fix those pesky door ajar problems.