2000 BMW 323i "door ajar" light on dash is on but the door is not ajar

SOURCE: 2003 ford expedition "door ajar" & interior lights staying on

the wire on the door latch make sure they are plugged in or unplug it and the light should go out if it does not then it's not that door

SOURCE: 1997 ford exibition xlt my interior light and running board lights wont go off along wiith the door ajar light on dash board. please help

Take some WD40 and open the doors and spray a liberal amount into each of the door latches. Then open and close the doors firmly several times. This will work most of the time to unstick the ajar switches.

SOURCE: door ajar light won't go off

I had the same problem. Spray WD-40 (with the sprayer extender) into the latch of the doors very liberally. Open and close doors a few times. Should resolve issue.

SOURCE: flashing headlights in a 2000 bmw 323i

lose wire or lose ground wire

SOURCE: door ajar dash trouble and dome light stays on even if all doors

The door sensors will need to be replaced. A screws can be removed and then a wire can be taken of and you then can replace the switch.