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Thread: Brake light now car won’t start

  1. #1
    Join Date
    Oct 2015
    Location
    Georgia
    Posts
    24
    My Cars
    1992 325is

    Brake light now car won’t start

    So I have a 95 325i

    i went out to wiggle the brake light bulb to get the light to come on

    went back into my car to start it up and now it won’t start, wasn’t having issue with starting the car before

    Also says brake light circuit on OBC

    please help

  2. #2
    Join Date
    Oct 2015
    Location
    Georgia
    Posts
    24
    My Cars
    1992 325is
    So I found my brake light fuse was blown, changed it and it has started up. Probably need to replace my taillights

  3. #3
    Join Date
    Dec 2017
    Location
    Croatia
    Posts
    58
    My Cars
    E36 '96 320i
    All your taillights bulbs are working?

  4. #4
    Join Date
    Oct 2015
    Location
    Georgia
    Posts
    24
    My Cars
    1992 325is
    Everything except for brake lights, only the rear windshield light is working right now

  5. #5
    Join Date
    Aug 2009
    Location
    sunnyvale CA
    Posts
    1,592
    My Cars
    325is
    One switch on the pedal drives all the bulbs so check the connector for 12v in the trunk, check ground, then check the bulb socket the bulb adapter and the bulb itself. I have seen corrosion on the socket eat a hole in the metal. The center light also fails due to over heating. I was also going to say check the trunk wire loom, but that doesn't seem to be able to cause brake light problems?
    Last edited by gc325is; 07-23-2018 at 10:39 PM.

  6. #6
    Join Date
    Oct 2003
    Location
    New Zealand
    Posts
    266
    My Cars
    1996 E36 M3 Evo
    If your 3rd brake light it working then it's not a problem with the pedal switch... trunk lid wiring loom can cause random electrical problems but it certainly doesn't point directly to the brake lights.

    Really, you need a multimeter (or electrician) to see where you do and don't have power.
    '96 M3, S50B32, 6MT
    + good stuff

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