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Traction control light.

MPP Jun 6, 2018

  1. MPP

    MPP Active Member

    had the traction control light come om the other day whilst in traffic, stayed on all the way home for 3 hour's.
    Comes on now after a few minutes of driving.

    Also had the glow plug light flashing for a few minutes today.

    My generic fault code reader brings up nothing.

    Any idea or is a VDS job?
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  3. MPP

    MPP Active Member

  4. MPP

    MPP Active Member


    Borrowed my mates code reader.
    Came up with 00526 brake light switch.

    Ordered .
  5. i3oricua

    i3oricua Active Member Team Brill Red Audi A4 Saloon

    This is your problem. Glad the code reader helped you out. I had to look over the internet for hours before I figured out the problem on my Q7.
  6. DieselJake

    DieselJake Well-Known Member VCDS Map User

    Do you have throttle response with the lights?

    If you were closer to Birmingham I'd say bring it to mine as I've got vag com and had the same problem intermittently, I've read some people just replace the brake light switch but others (myself included) are not so lucky.

    I was pretty lost with mine but here are my recent threads on it (then I'll explain the actual problem)
    1. https://www.audi-sport.net/xf/threads/any-ideas.365704/
    2. https://www.audi-sport.net/xf/threads/cars-having-a-wee.374700/
    3. https://www.audi-sport.net/xf/threads/1-9tdi-not-starting.374890/

    Turns out the snow and heavy rain got into my computers and all that jazz, I started trying to rectify this issue by removing the battery and unblocking the drain plugs (VERY common problem for them to get plugged with debris, couldn't even recognize mine were holes before jabbing about a bit with a screwdriver):

    Unfortunately for me this was the least of my worries as the housing for the computer bits and bobs, the seal and scuttle pannel were all a bit tarnished and water was leaking straight in flooding and corroding stuff, this can be corrected (and/or stuff replaced) like the following:

    Again it could just be the brake light switch as you say but vag com got additional codes for me which helped me conclude that it wasn't just the signal from the brake it was the entire communication to the brains of the car which eventually got flooded beyond allowing the car to start but hopefully it should be all good now. Either way the switch (if it is just the brake switch) could be related to your drain plugs being filled with debris as if they are clogged water gets down towards/in the footwell (mine wasn't in the actual footwell but no doubt must of been getting close looking at the state of the debris clogging the holes).
  7. MPP

    MPP Active Member

    Replaced the switch Wednesday. All sorted.

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