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Thread: Random windows all opening/door lock malfunction

  1. #1
    Join Date
    Oct 2017
    Location
    Maine
    Posts
    56

    Random windows all opening/door lock malfunction

    Ok, this is making me nuts. I have a 2005 330ci ZHP coupe with just under 100k miles. I came home new years eve in my other car in the poring rain to find my car had randomly unlocked and opened every window including the sunroof. It was as though I had held down the unlock on the FOB. A week later, while driving to work, the car locked the doors. I hit the central unlock, and a few miles later the doors locked again. It randomly stopped, then happened again a few days later. I have had the windows all open a few more time since while sitting locked with the engine off. This seems to coincide with rainy or snowy weather, mostly rainy. It stopped for several weeks, then last weekend I ran it through the car wash. I looked out later that evening to check on it and the dome lights were on and all windows were open. Every time I closed the windows, a minute or two later they reopended. If I started the car, they remained closed. When I turned the car off, they all opened again. I went in the house to switch keys thinking maybe one key was stuck sending a constant unlock signal, but the car acted the same while in the presence of the other key. Now I need to disconnect the battery when the car is off to keep all the windows closed.

    One other thing I have tried is unplugging the rearview mirror/clown nose is case it was somehow the culprit. This made no change.

    Could this be the module in the driver door or the GM5? Anyone had something similar? My searches came up empty on this one. Any help would be appreciated.

  2. #2
    Join Date
    Jan 1970
    Location
    Branford, CT
    Posts
    15,395
    Sounds like GM5...
    BP
    2005 330i ZHP / 6MT
    Imolarot / Naturbraun



    It's not the car you drive, it's how you drive it.

  3. #3
    Join Date
    Aug 2014
    Location
    Leesburg, VA
    Posts
    585
    See ~1/3 down the page here: https://www.bmwgm5.com/
    2006 330ci ZHP - Silbergrau Metallic / Stoff Laser/Anthrazit / Alu Black Cube trim / Adaptive Xenon headlights / HK hi-fi system / heated front seats

  4. #4
    Join Date
    Nov 2016
    Location
    Charlotte, NC
    Posts
    2,327
    Quote Originally Posted by az3579 View Post
    Sounds like GM5...
    church

    https://www.bmwgm5.com/

    edit: heckin john heckin beat me to it hecker

  5. #5
    Join Date
    Oct 2017
    Location
    Maine
    Posts
    56
    Awesome, thank you! I also posted this issue on the E46Fanatics site and received this link:
    https://www.bmwgm5.com/bmwgm5/Bad_Actuator.htm

    I have a spare sedan driver door actuator, any reason to think it will not work in my coupe?

  6. #6
    Join Date
    Nov 2016
    Location
    Charlotte, NC
    Posts
    2,327
    Quote Originally Posted by E46Fan View Post
    I have a spare sedan driver door actuator, any reason to think it will not work in my coupe?
    Compare the part numbers on realoem and confirm?

    http://www.realoem.com/bmw/enUS/part...-E46-BMW-330Ci

  7. #7
    Join Date
    May 2011
    Location
    Charleston SC
    Posts
    6,110

    Random windows all opening/door lock malfunction

    For some reason, none of the links above work for me...

    I’d replace the drivers door actuator. It’s malfunctioning and the GM 5 module thinks the key is inserted and turned to open all the windows.
    We had this exact same thing happen to our 135. Thankfully, it never rained when is was happening.
    Last edited by Sockethead; 02-01-2019 at 05:36 AM.
    Dinan CAI &Throttle body, ESS Tuning TS2, Bimmerbrakes gen3 headers, UUC SSK & DSSR. Achilles oil pump, VAC oil pan baffle
    M3 Motor mounts, UUC Trans mounts, Modified clutch style LSD 3.15, TMS front subframe reinforcement, Koni Yellow sports,
    H&R sport springs,
    UUC sway bars, BMW Perf. Rotors, UUC SS brake lines, Hawk HPS pads, CSL replica wheels,
    Rotora strut bar, FXR HID conversion, M3 Mirror conversion, BSW stage 1 speakers

  8. #8
    Join Date
    Oct 2017
    Location
    Maine
    Posts
    56
    Thank you. Your comments agree completely with everything I am reading on E46Fanatics. I have a brand new driver door actuator coming tomorrow and will get it installed this weekend. I’ll report back how things go.

  9. #9
    Join Date
    Oct 2017
    Location
    Maine
    Posts
    56
    Driver door actuator installed Feb 2. NO problems since then, considering fixed. Thank you all for your help!
    Last edited by E46Fan; 02-13-2019 at 05:53 PM.

  10. #10
    Join Date
    May 2011
    Location
    Charleston SC
    Posts
    6,110
    Awesome!
    Dinan CAI &Throttle body, ESS Tuning TS2, Bimmerbrakes gen3 headers, UUC SSK & DSSR. Achilles oil pump, VAC oil pan baffle
    M3 Motor mounts, UUC Trans mounts, Modified clutch style LSD 3.15, TMS front subframe reinforcement, Koni Yellow sports,
    H&R sport springs,
    UUC sway bars, BMW Perf. Rotors, UUC SS brake lines, Hawk HPS pads, CSL replica wheels,
    Rotora strut bar, FXR HID conversion, M3 Mirror conversion, BSW stage 1 speakers

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