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Anyone else had ABS controller fault on their B5?

Discussion in 'A4/S4 forum(B5 Chassis)' started by AndyMac, Jul 3, 2010.

  1. AndyMac

    AndyMac Moderator
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    Looking at this article it looks like my ABS problem is a common failure on B5's.
    http://www.audiworld.com/tech/elec116.shtml
    Mine has displayed exactly the symptons described slowly getting worse until now when the ABS light is on all the time. The irony is that it looks like the failure is in the ABS ECU part of the controller which does nothing to control the ABS it just talks to the Main ECU to enable the warning lights on the DIS. Nice one Audi, another piece of unnecessary electronics! Looks like I need to remove mine to find the part number as prices seem to range from £40-500 on ebay.
     
    #1 AndyMac, Jul 3, 2010
    Last edited: Jul 3, 2010
  2. ian52

    ian52 2000 a4 1.8tqs-yellow

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    Think it is pretty common. Is your car facelift by any chance? You can send the controler off to companys that will fix it for about £100.
     
  3. DriveByShooters

    DriveByShooters Editor Audi-Sport.Net Magazine

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    Not a bad job to do either. 6 or 8 bolts (cant remember as ages since i did mine) hold the controller onto the pump.
     
  4. AndyMac

    AndyMac Moderator
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    No it's a 97.
     
  5. mwarrey

    mwarrey Member

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    Its happened on my S4, had mine repaired, if you do a search on ebay there used to be a few people who do a send your unit off and repair service.

    There is an electrical contact inside the unit that need resoldering, its quite a fine wire so you need good soldering skills. I used to have a link to a thread on the russian passat forum that showed som pics of this but sadly it doesnt work anymore.
     
  6. AndyMac

    AndyMac Moderator
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    Thanks mate, I'm pretty good with a soldering iron so will give it a go.
    Cheers, Andy
     
  7. ian52

    ian52 2000 a4 1.8tqs-yellow

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    Unless your an expert i wouldnt bother. Its a tiny wire.
     
  8. AndyMac

    AndyMac Moderator
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    Yeah, just Dremelled the top off and think I'll send it to Autotek to repair.
     
  9. jcb

    jcb Active Member
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    BBA reman, PITA to remove, looks easy to get into but you are better off whipping off the wheel, arch liner and washer bottle to get into it.
    I just sent it off, taped a poly bag over the housing while it was away and carried on driving. got it back in less than 72 hours
    been 8 months now since it was done and faultless
     
  10. AndyMac

    AndyMac Moderator
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    Yes I went in via the wheelarch liner, very easy for Audi for a change, everything else usually requires removing the front end. I sent it off today and they said it will be 2 days.
     
  11. AndyMac

    AndyMac Moderator
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    Got the refurbed ABS module back today and it is like a new unit. All polished and the plastic parts have been moulded back seamlessly. Kind of puts the rest of my engine bay to shame.
    Anyway fitted it and voila no more beeps of agony and I have my DIS back to normal. Very good service from Autotek, recommended.
    [​IMG]
     
    #11 AndyMac, Jul 8, 2010
    Last edited: Jul 8, 2010

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