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Thread: 2006 645ci

  1. #1
    Join Date
    Aug 2012
    Location
    brooklyn, new york
    Posts
    2
    My Cars
    98 740il BMW

    2006 645ci

    Can anyone tell me why my 645ci will start good drives great for days no codes. Then out off nowhere it will cut off and won't start for hours. It will say transmission failure drives with caution. And 5 other codes the next day no codes the car will run for a week or so then the same thing again. I took it to bmw for diagnostic they come up with nothing. I'm so frustrated I want to enjoy my car I'm paying for. Can anyone help?

    Sent from my SM-G960U using Tapatalk

  2. #2
    Join Date
    Jun 2002
    Location
    Aberdeen, NC (yes, again)
    Posts
    23,672
    My Cars
    E39M5, E500 4WD
    Welcome to the forum.

    If you'll tell us the actual code descriptions given by the car's computers when it was scanned at the dealership, we might have enough information to direct you. The little pop-up screens on the I-Drive are only warnings that you need to get to a BMW shop, and have the codes read. Without those codes, there's no way to know what's wrong.

    Chris Powell
    Racer and Instructor since, well. decades, ok?
    Master Auto Tech, owner of German Motors of Aberdeen
    BMWCCA 274412
    German Motors is hiring ! https://www.bimmerforums.com/forum/s...1#post30831471

  3. #3
    Join Date
    Jul 2011
    Location
    Arlington, VA
    Posts
    9,933
    My Cars
    2018 BMW M240i
    The first step in diagnosing a problem is to scan the engine computer (DME) and the transmission computer (EGS) for codes. You need to find a reputable indie shop that specializes in bimmers. Try www.bimrs.org.

  4. #4
    Join Date
    Jan 2016
    Location
    Ca
    Posts
    6,981
    My Cars
    2001 525it
    I would look into the ivm module, when they act up they don't set any faults

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