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  1. #1
    Reverse Gear

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    '99 A6 ABS light on. Controller not recognised.

    Hi guys,

    I have had the ABS light on the car for a while.

    When changing my alloys I found the front brake sensor wire had snapped, so I replaced the brake pads. I then tried to clear the fault.

    But vag.com or Bosch tool.

    Could not connect to the controller. No communication

    IS there any other way to clear this fault.

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  3. #2
    bearthebruce's Avatar
    Ross-Tech, LLC

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    Jul 2006
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    Ambler, PA
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    If neither tool can connect to the controller, check the fuse to the ABS controller, check the wiring to the controller, and then replace the controller. It would be helpful if you posted a full auto scan of the car so we would have full information. For instance, did the tools connect to any modules in the car? What version of VAG-COM were you running and what interface were you using?

    There are many possibilities to be considered. More information usually leads to better assistance.
    -Bruce-
    Ross-Tech, LLC
    Bruce@Ross-Tech.com

  4. #3
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    Feb 2007
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    I had an ABS problem with the warning light showing and my local specialist's diagnosis software couldn't communicate with the ABS module. In virtually every case, he told me, this indicates a knackered ECU and sure enough that was the problem. BBA-Reman fixed my module for me for about 100.

    The OP may not care enough to reply to helpful posts in his thread, but perhaps other people searching on related matters (like me!) may find this useful in the future...
    2010 A6 Avant TDI S-Line LeMans
    1999 A6 Avant 2.5 TDI Quattro - gone, not forgotten.

  5. #4
    6th Gear

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    My abs ecu is only 15

    http://cgi.ebay.co.uk/ws/eBayISAPI.d...m=280274036588

    don't know if it'll fit a 99 A6
    MY15 8V S3 Sportback with options

  6. #5
    Neutral

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    Quote Originally Posted by auroan View Post
    My abs ecu is only 15

    don't know if it'll fit a 99 A6
    That's completely different to the part that I had repaired by BBA-Reman.
    2010 A6 Avant TDI S-Line LeMans
    1999 A6 Avant 2.5 TDI Quattro - gone, not forgotten.

  7. #6
    6th Gear

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    Fair enough
    MY15 8V S3 Sportback with options

 

 

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