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Automatic door locks
1999 Ford Explorer

Automatic door locks

(1999 Ford Explorer)
Every other time the drivers door is closed it locks on it's own. The automatic door locking system has been deactivated by using the door key pad. Also the drivers door lock doesn't work with the key.
1 answer & 1 comment
Popular Answer
on October 05, 2010
Can't say there is an easy answer on this. I think you have a couple of separate problems.

First the key not working in the door -- unless it is binding (starts to move but doesn't go all the way...), then you have a worn key, a poorly cut replacement key, or a faulty cylinder.

Still, that is separate from a power door lock locking on its own. I would be looking at the RAP (Remote Anti-Theft Personality) module that controls the door locks. Check for codes in the RAP module. A diagnostic tool can check for different functions to see what happens at the module when you hit a button or if the door locks on its own.

Not an easy diagnosis, so good luck.
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on October 08, 2010
Thank you. What I found out that a door latch spring (drivers door) breaks and therefore relieves the tension on the door handle rod and thus causing the door handle to be loose and key not to work in the tumblers and also the door to lock by itself. I will have to take off the inner door panel and look for this busted spring. I hope it is that simple of a fix
RonP..
General Diagnosis
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on October 05, 2010
Can't say there is an easy answer on this. I think you have a couple of separate problems.

First the key not working in the door -- unless it is binding (starts to move but doesn't go all the way...), then you have a worn key, a poorly cut replacement key, or a faulty cylinder.

Still, that is separate from a power door lock locking on its own. I would be looking at the RAP (Remote Anti-Theft Personality) module that controls the door locks. Check for codes in the RAP module. A diagnostic tool can check for different functions to see what happens at the module when you hit a button or if the door locks on its own.

Not an easy diagnosis, so good luck.
Sign in to reply
on October 08, 2010
Thank you. What I found out that a door latch spring (drivers door) breaks and therefore relieves the tension on the door handle rod and thus causing the door handle to be loose and key not to work in the tumblers and also the door to lock by itself. I will have to take off the inner door panel and look for this busted spring. I hope it is that simple of a fix
RonP..

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