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Thread: Bmw e46 keyless entry problems

  1. #1
    Join Date
    Jun 2018
    Location
    UK
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    1
    My Cars
    1998 BMW M3 Coupe

    Bmw e46 keyless entry problems

    My son has a 03' 3 series sedan. Both keys have stopped working (keyless entry) and after replacing the battery in one of them it still doesn't work. The central locking still works from the button inside the car. Is it possible to fit an aftermarket keyless entry kit to the existing central locking and just retain the keys to start the car?
    Last edited by liaemars; 06-17-2018 at 06:47 AM.

  2. #2
    Join Date
    Jul 2011
    Location
    Arlington, VA
    Posts
    6,140
    My Cars
    2018 BMW M240i
    The GM5 module controls the keyless lock/unlock system. It’s located above the fus panel in the glove box. Go to www.bmwgm5.com to learn more.

    The system has an antenna in the rear windshield. The signals from the keys are amplified by an amp located in the driver’s side “C” pillar. The “C” pillar is the part of the roof that flows into the body behind the rear seat. That could have stopped working.
    So, before you start throwing parts at the problem do some research.

  3. #3
    Join Date
    Sep 2005
    Location
    Salem, MA
    Posts
    6,824
    My Cars
    03 zhp, 97 e36m3, 04 zhp
    Have you tried re-initializing your keys after swapping out said battery?

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