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Thread: Brake lights on all the time, not brake switch

  1. #1
    Join Date
    Oct 2020
    Location
    Omaha
    Posts
    2
    My Cars
    10 BMW 750i

    Brake lights on all the time, not brake switch

    Hi all, I have a 2010 750i. All(3) brake lights are on all the time(if ignition is on). Here is what I checked:
    1-replaced the brake switch to new one
    2- check fuses 9 and 32, tested good
    3- check voltage on fuse #7, 12 volts. Good
    4- ISTA no codes

    What else should I check? It’s the only problem the car currently has all else is working well.
    Any leads would be appreciated.

    TÍA

  2. #2
    Join Date
    Oct 2020
    Location
    Omaha
    Posts
    2
    My Cars
    10 BMW 750i

    Brake lights always on, not brake switch

    Hi all, I have a 2010 750i. All(3) brake lights are on all the time(if ignition is on). Here is what I checked:
    1-replaced the brake switch to new one
    2- check fuses #9 and #32, tested good
    3- check voltage on fuse #7, 12 volts. Good
    4- ISTA no codes

    What else should I check? It’s the only problem the car currently has all else is working well.
    Any leads would be appreciated.

    TIA

  3. #3
    Join Date
    Jan 2007
    Location
    .
    Posts
    7,708
    My Cars
    .
    Is the brake light switch properly adjusted?
    ASE and BMW Master Certified Technician

  4. #4
    Join Date
    Jan 2016
    Location
    Ca
    Posts
    6,981
    My Cars
    2001 525it
    Check for faults in the frm module ( footwell module)

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