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Handbrake makes ABS and brake warning lights come on

Discussion in 'A4/A4 cabriolet/S4 forum(B6 chassis)' started by dope, Jul 5, 2013.

  1. dope
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    dope alcoholic pervert

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    [Jul 5, 2013]
    Chaps.

    Like it says. Only it only happens if the handbrake is used with the car facing uphill, like doing a hillstart.

    When I say ABS and brake warning lights I mean the little red ones in a circle, one says ABS the other has a exclaimation mark in a triangle.

    They go out and don't come back on when the key is removed from the ignition, until the next hillstart scenario.

    I changed the front pads and bled the fronts last week and everything feels fine under braking. Didn't touch the back at all.

    Anyone any thoughts?
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  3. dope
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    dope alcoholic pervert

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    [Jul 18, 2013]
    bump

    Keeps doing it. Anyone had anything similar?
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  4. stu_m
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    stu_m Active Member VCDS Map User

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  5. SmoothAssault
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    SmoothAssault Will design for mods

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    [Jul 18, 2013]
    I could be wrong, (not driven my car for a few months) but doesn't the red exclamation mark one always come on when the handbrake is applied? ABS light coming on is a strange one though.
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  6. dope
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    dope alcoholic pervert

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    [Jul 18, 2013]
    It's full. The front pads were well worn when I replaced them so there was a lot of pushing the pistons back, hence the fluid was already maxing out. Then I bled it, topping up as needed.
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  7. dope
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    dope alcoholic pervert

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    [Jul 18, 2013]
    I think there's a different one for when the handbrake is on. Something resembling brake shoes round a drum. And it goes off when the handbrake is off.
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  8. stu_m
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    stu_m Active Member VCDS Map User

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    [Jul 18, 2013]
    seems a bit odd!

    I mentioned fluid as it only does it on a hill it could have been low fluid exposing the sensor

    I would say a scan is in order to see if anything is amiss
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  9. dope
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    dope alcoholic pervert

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    [Jul 19, 2013]
    Yeah - I see where you're going with that. It would make sense.

    I might change the rear pads. Maybe the problem will go away. Failing that, as you say, a scan it is.
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  10. bez101
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    bez101 Yorkshire & Humber Rep. Regional Rep VCDS Map User

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    [Jul 19, 2013]
    iv never known pads front or back trigger the ABS sensor

    they rears dont have a wear indicator either
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  11. stu_m
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    stu_m Active Member VCDS Map User

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    [Jul 19, 2013]
    after reading this again I would check the ABS sensors one of them may have come loose and popping out on a hill then going back in??

    also do a scan before replacing anything

    stick your location in your profile so people know where you are someone close may be able to offer a scan

    I have full vcds if it helps
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  12. dope
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    dope alcoholic pervert

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    [Jul 19, 2013]
    Thanks for the offer stu. Updated my profile and as you can see we're miles apart!

    I guess it's more than probable I knocked an ABS sensor when changing the pads. Not that I noticed them! Are they obvious?
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  13. stu_m
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    stu_m Active Member VCDS Map User

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    [Jul 19, 2013]
    yup they arent far from the brakes have a look you will see them
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