Interior lights and door ajar light goes on and off while driving

driving
ford
lights
expedition

#1

My 1999 Ford Expedition has the interior lights go on and off while driving and the door ajar light is on most of the time. When I close the driver’s door the interior lights stay on and sometimes my battery goes dead. I’m thinking it’s a door sensor. If so, is this easy to replace on my own or do I need to take it in? Please let me know what I can do to solve this issue. Thanks!


#2

If it’s the same setup as my 98 Windstar, the door switch/sensor is built into the door latch. Before you replace anything, spray some electrical contact cleaner or WD-40 into the door latch while working the handle. Hopefully this should help. Let us know if it works or not.

Ed B.


#3

Clean and adjust the door sensor and check for possible broken wires or connections at the door.


#4

We’ve had this one before. Apparently this problem is common with many types of Ford vehicles of that vintage. Most owners report success with Ed’s advice above.


#5

Thanks for your advice on this. Your suggestion to use a lubricant, like WD-40, and spray the latch did the trick. Amazingly simple! I haven’t had a problem since.