Question about 1998 Ford Expedition
The door switches are built into the door latches on the Expedition. This makes the problem hard to isolate without taking the doors apart. Try spraying some WD40 into the door latches and opening and closing each door several times. Usually this will free up the sticking switch. My experience is that most of the time the drivers door switch is at fault.
Posted on Feb 04, 2010
I sprayed WD40 in my door locks (all of them), this fixed my problem. I did check to make sure there were NO wire problems first. I noticed this problem happening most during the spring, when the weather got a bit warm after winter. All of the sand and dust caused my problem. I was happy to know I didn't need to take it to a specialist.
Remember to open and close all doors several times for the WD40 to get all the way into the lock mechanisms. Truly, If the WD40 doesn't work, then check to make sure it isn't the wiring or fuse.
Posted on Feb 06, 2010
Spraying WD40 in the rear door latches worked for me.
The door switches usually make a connection to ground when the door is opened and the switch closes. The wire running to one of the door switches may have some damaged insulation and is touching ground somewhere. Moving the cabling around near the doors may help show up the trouble. Make sure that the switches aren't causing the trouble. You should be able to remove the connection to them. If the trouble still occurs then you know it isn't from the switches.
Also, if you have a Ford with dome light always, door ajar light on, and power door locks dont work unless car is on, this is caused by the ground wire that leads to the power door lock switch in the driver door. Reconnect and you are in business. Wish I knew this before having towed and letting dealer diagnose.
Hope this helps.
Posted on Feb 04, 2010
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Posted on Jan 02, 2017
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