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Thread: Computer turning off drivers headlight

  1. #1
    Join Date
    Aug 2004
    Location
    NE Oklahoma
    Posts
    1,630
    My Cars
    E60 530xi - E53 4.4

    Exclamation Computer turning off drivers headlight

    So my wife’s 07 525i drivers headlight was out.
    I replaced the bulb (H7) it went out the very same day

    So I finally tore down the ENTIRE headlight housing
    And had to re wire 100% of it. Effing nightmare

    Over 30 feet of wire and lots of heat shrink and solder later
    It turns out the computer is sensing a burned out light then cutting the power.

    This phenomenon happened straight from the harness even if it isn’t plugged in to the headlight.

    So the headlights look great but the driver side one turns off after about 10 seconds.

    https://youtu.be/ddoNo5k1ipI

    Any ideas?

  2. #2
    Join Date
    Aug 2019
    Location
    USA
    Posts
    6
    My Cars
    2008 BMW 528i
    Have you scanned it for codes? Try disconnecting battery for about 10 minutes. That should reset the computer and hopefully fixes it.

  3. #3
    Join Date
    Aug 2004
    Location
    NE Oklahoma
    Posts
    1,630
    My Cars
    E60 530xi - E53 4.4
    I have scanned but only with an obd app.
    The battery suggestion is obvious �� thank you ����
    I’ll try that and reply back

  4. #4
    Join Date
    Aug 2004
    Location
    NE Oklahoma
    Posts
    1,630
    My Cars
    E60 530xi - E53 4.4
    No. That didn’t work.
    I have the software and connection device to get into the factory computer in the Mail.
    I suspect I can turn off the warnings and that will fix my problem... fingers crossed

  5. #5
    Join Date
    Aug 2004
    Location
    NE Oklahoma
    Posts
    1,630
    My Cars
    E60 530xi - E53 4.4
    Anyone...? Buler buller.....

  6. #6
    Join Date
    Feb 2010
    Location
    Atlantic Beach, Fl
    Posts
    502
    My Cars
    81,e21 orig ownr&05,e60
    The Light Control Module, LCM, has the ability to cut power to individual circuits when a short develops to protect the circuit. It also has a counter feature that Permanently cuts power to the affected circuit after 50 starts of the of the engine. BMW will tell you that the LCM has to be replaced. There is diagnostic software and programming software out there. Tool32 is the only application that can clear short circuit codes that store permanently.. Here’s a link to the thread you need,The Official Guide To Resetting A Short Circuit Fault In A FRM Module . https://www.bimmerfest.com/forums/sh...d.php?t=866044

    Also post #7 on this thread has a YouTube video on using tool32. https://www.bimmerfest.com/forums/sh...4#post10115661

    keep us posted.
    Last edited by jtbgonesailing; 06-24-2020 at 08:19 PM.

  7. #7
    Join Date
    Aug 2004
    Location
    NE Oklahoma
    Posts
    1,630
    My Cars
    E60 530xi - E53 4.4
    What hardware is needed? Just the adapter and cord?
    I’m assuming I can dl tool32?

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