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Thread: 2001 Audi TT (very) intermittent ABS warning

  1. #1
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    2001 Audi TT (very) intermittent ABS warning

    Here's the log

    Tuesday,02,October,2018,14:34:04:38274
    VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x86(VMWare)
    VCDS Version 18.9.0.2 HEX-NET CB: 0.4436.4
    Data version: 20180927 DS296.0
    www.Ross-Tech.com





    --------------------------------------------------------------------------------
    --------------------------------------------------------------------------------


    Address 03: ABS Brakes Labels: 8N0-907-379-MK20-E.clb
    Control Module Part Number: 8N0 907 379 E
    Component and/or Version: ESP 20 CAN V004
    Software Coding: 18446
    Work Shop Code: WSC 01236
    VCID: 3E30F9C738E237BAE7-4AE1
    1 Fault Found:

    01279 - Longitudinal Acceleration Sensor (G251)
    27-10 - Implausible Signal - Intermittent




    Who can point me to the right thing what needs fixin'. Above leads me to some sensor? near pass side front fender?

    thanks!
    Julie

  2. #2
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    Of course I mean ABS but I can't edit the title...

  3. #3
    Benevolent Dictator Uwe's Avatar
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    Quote Originally Posted by msjulie View Post
    Of course I mean ABS but I can't edit the title...
    I can.

    I *think* that setup has a separate ESP sensor module somewhere. I'm confident someone with proper info will be along here.

    -Uwe-
    The engineering problems are likely insurmountable. It would be like proposing to land a rocket booster section on a barge floating in the middle of the ocean.

  4. #4
    Verified VCDS User NZDubNurd's Avatar
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    I think that vintage of ESP sensor are the ones that get dry joints - hence intermittent faults. I'm also not 100% sure, but it may be mounted behind the glovebox, accessed from the dash side panel or beside the steering column - same as MK4 Golfs. One is lateral, one is longitudinal.

    I've never even touched an actual mk1 TT so don't quote me on the location.

    I know the same units (in MK4 Golfs) have been repaired by people, resoldering the connections inside. A used one should be cheap, so I'd suggest practicing on a cheap used one, then test it in the car before potentially destroying your "mostly" working one. You have to dig out all the potting compound, without destroying the board.

    Ultimately, a new one is the go... is it a safety feature! Though if you carefully repair it and is passes the basic settings, it should be good to go - nobody seems to have trouble with repaired ones... yet...
    Allan
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  6. #5
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    Thanks. I think I will do some investigating this weekend...

  7. #6
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    Pretty sure that one is in between the steering column and center console like a MK4 as stated above.

    Kevin

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