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My driver door on my 06 F150 crew cab stopped locking/unlocking recently. I purchased a new actuator and installed and it worked great. About a week later it stopped working again. But then in order to unlock the door from outside you had to turn key and pull on handle while the key was still turned. I was about to break open door again when it made a strange electronic type sound when I was leaving for work (when auto lock activated). After that it started working again - for 3-4 days. Now it stopped working again. I can open door fine from inside but lock won't stay unlocked. As soon as I release handle it locks again.
Any ideas?
Initially this sounded like a mechanical linkage problem, but the end makes it sound more electrical to me.
If you aren't having issues with any other door locks, I'd say your only option is to carefully inspect the linkage to ensure it is all properly connected then inspect for a wire that may be getting pinched.
Because of their location, the switches on the door tend to get corroded due to getting wet when the door is open. It wouldn't hurt to clean and inspect that area as well, though I don't think that is the source of your problem.
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