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Thread: Drives door lock switch not working.

  1. #1
    Member V8GrandMarquis's Avatar
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    Default Drives door lock switch not working.

    Hey guy so the switch on my driver's door does not work, but does on passenger side and remote. Can't unlock and lock. 99' MGM I think it might be the switch but before I go to the scrap yard and pull one out just want to get a second opinion. Thanks so much.

  2. #2
    Wagon Addicted Tiggie's Avatar
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    Could also be the wires broken in the door jamb where they cross from the cowl to the door.
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    Member BigT's Avatar
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    I had my go out twice, including new replacements. I finally removed them and manually used the key and slide bar to lock and unlock the doors.




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  4. #4
    GMN Regular DerekTheGreat's Avatar
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    With my Town Car it was the opposite thing. Turns out a "workout" of the switch made it work again, so perhaps there is a wiring or contact issue as was the case with mine. Guess no one really used the controls on the passenger side of my car.
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    Member V8GrandMarquis's Avatar
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    All good stuff here thanks.

  6. #6
    Member V8GrandMarquis's Avatar
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    Another issue just came up, maybe it's related. When I shift from Park to Drive the auto locks no longer engages. Any thoughts. Thanks.

  7. #7
    Road Warrior Kodachrome Wolf's Avatar
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    I believe the autolock feature runs through the driver's door module. Does your exterior keypad work at all?

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  8. #8
    Member V8GrandMarquis's Avatar
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    I tried punching in the code I found in the trunk with no success. Drivers door lock switch stoped working, now the auto locks. Module maybe?

  9. #9
    Beater gonna beat sly's Avatar
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    Check the connectors to the module. If something is loose... that would do it. Check fuses too. If that all checks out... yeah... probably the module.

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  10. #10
    Member V8GrandMarquis's Avatar
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    Okay so I replaced the switch, still drivers door doesn't unlock. Replaced the module, still doesn't unlock, but passenger door does. Going to get a multimeter and do some probing.

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