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Haldex not working?

Discussion in 'A3/S3 Forum (8L Chassis)' started by s3 Hoggy, Nov 11, 2010.

  1. s3 Hoggy

    s3 Hoggy Whats going on???

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    Everything with my car has been working sweet as a nut until yesterday. Basicly I put my foot down and get a lot of wheelspin with no signs of the haldex helping out?
    It's always been serviced on time (the haldex) with the last oil and filter change 4,000 miles ago. I don't experience any other symptoms like others have with thee point turns ect, also my car has only done 52,000 miles.

    Anybody have Ideas as to why this might be happening?
    Thanks for reading,
    Matt
     
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  3. alijames

    alijames Active Member

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    Matt, The obvious one is the fuse. Failing that, best way forward would be a Vag-com start to the investigation.

    I've got an eBay serial one which works fine on 409.1 on my laptop. Sadly I'm away from tonight, otherwise could have brought it into Oxford this morning...

    Cheers,
     
  4. finesse

    finesse Active Member
    VCDS Map User

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    best to scan
     
  5. s3 Hoggy

    s3 Hoggy Whats going on???

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    Ah well mate no worries, I'll hopefully be getting it plugged in tonite if the garage round the corner will fit me in,
     
  6. s3 Hoggy

    s3 Hoggy Whats going on???

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    Just phoned the garage and they can't fit me in for two weeks! Even for a diagnostics check! Think I'm going to buy an EBay lead and see if any thing shows up?
     
  7. finesse

    finesse Active Member
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    eBay cable will do
     
  8. colicabcadam

    colicabcadam Guest

    could also be the hand brake switch, if this is fooked, it'll stop the haldex working
     
  9. s3 Hoggy

    s3 Hoggy Whats going on???

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    Would this not cause the handbrake light to be on all the time mate?
     
  10. colicabcadam

    colicabcadam Guest

    in THEORY yes
     
  11. alijames

    alijames Active Member

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    Matt. if you are getting an eBay lead, I would advise getting a serial one, rather than a USB one. I tried 3 USB ones and none of them worked. 1st Serial one worked perfectly and still does..

    Cheers,
     
  12. Nilz

    Nilz Defo worth the wait :)
    Audi Sport Owner Group Team Silver Audi S3

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    Dude, is there nobody else nearby that can do a scan for you??
     
  13. Welly

    Welly VX220 SC Driver :)

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    Dude, check the fuse as mentioned as first port of call. It's fuse 31. Top fuse in the middle column. Will be orange IIRC.

    Next, have a look at the plug on the diff. I've seen 2 separate S3s where this has become corroded inside and needed repair.

    If you are not getting any Haldex, then expect an error code along these lines:


    Controller: 8N0 907 379 E
    Component: ESP 20 CAN V005
    Coding: 18448
    Shop #: WSC 01236
    1 Fault Found:
    01324 - Control Module for All Wheel Drive (J492)
    49-00 - No Communications
     
  14. s3 Hoggy

    s3 Hoggy Whats going on???

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    Thanks for your help guys,
    Checked the fuse, looked fine but I still replaced it. That didn't sort it worth a try.
    Next I will be checking the plug on the diff as Welly said (will have t wait till Saturday now as no light)
    I will be ordering a lead tonight

    Thanks for everyones help so far,
    Matt
     
  15. colicabcadam

    colicabcadam Guest

    get the wheels off the ground, see if they all spin when you put it in gear, if thye do, i'd say it's a sensor problem (ie 5% of power is going to the wheels, so the heldex isnt broke)
     
  16. pj123

    pj123 Member

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    Isn't there an earth strap that corrodes back there? Vaguely remember reading about it but may have not been onto the haldex...
     
  17. s3 Hoggy

    s3 Hoggy Whats going on???

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    Where abouts is this mate? I had a quick look in the dark with a torch but its bloody cold and windy so I've come back inside! also where abouts is the earth strap?
     
  18. The Doctor

    The Doctor Well-Known Member

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    Keep us posted with this one Hoggy, hope you get it sorted.
     
  19. s3 Hoggy

    s3 Hoggy Whats going on???

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    Will do pal
     
  20. SamiG

    SamiG On Boost, ish.

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  21. mhr1972

    mhr1972 Member

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    I had this last year and it was down to my earthing strap from body to rear diff/haldex.
     
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  23. s3dave

    s3dave TFSI Hybrid
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    yes worth a check....
     
  24. s3 Hoggy

    s3 Hoggy Whats going on???

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    Cheers guys I'll have a look hopefully tonite if It's still light, can any body confirm which side the earth strap is on?
     
  25. s3 Hoggy

    s3 Hoggy Whats going on???

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    I have found this, could it be the Earth strap? It's bolted from the drive shaft to the underside of the spare wheel well. As you can see it's pretty fecked! Snapped in half

    [​IMG]
     
  26. alijames

    alijames Active Member

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    Yup. That'd do it...

    Cheers,
     
  27. s3 Hoggy

    s3 Hoggy Whats going on???

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    Right I fixed the strap, I'll be taking her for a test drive in the morning, Fingers crossed it's sorted!
     
  28. Duktor

    Duktor Member

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  29. s3 Hoggy

    s3 Hoggy Whats going on???

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    bad news the strap doesnt seem to have fixed the problem,

    I have found a fault code though, does anybody know what this might be? my repair on the strap wasnt fantastic as I was rushing so might have another look at that in the morning?


    VCDS-Lite Version: Release 1.0
    Saturday, 13 November 2010, 17:09:28:0
    Control Module Part Number: 02D 900 554 C
    Component and/or Version: HALDEX LSC ECC 0009
    Software Coding:
    Work Shop Code:
    1 Fault Found:
    65535 - Internal Control Module Memory Error
    00-00 - -

    Any help would be great,
    Cheers Matt
     
  30. pj123

    pj123 Member

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    I thought I'd check the earth strap today while I was changing my oils. I have a pre facelift model 1999 and it does not have an earth strap at all...
     
  31. JS1500

    JS1500 Howdy

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    New strap is only summin like £13, IIRC.
     
  32. SamiG

    SamiG On Boost, ish.

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  33. s3 Hoggy

    s3 Hoggy Whats going on???

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    Does anyone know if the earth souls be bolted to the chasis and the spare wheel well? As I've only bolted it back to the wheel well
     
    #31 s3 Hoggy, Nov 14, 2010
    Last edited: Nov 14, 2010
  34. dantheman1986

    dantheman1986 Member

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    did you find the problem in the end s3?
     
  35. s3 Hoggy

    s3 Hoggy Whats going on???

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    Not yet mate but everything seems to be pointing towards the haldex controller, havnt got s lot of time to get it sorted at the moment, as soon as anything changes I'll update this thread
     
  36. s3 Hoggy

    s3 Hoggy Whats going on???

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    WooooooooooooooHooooooooooooo! Fitted a second hand haldex controller this morning and now I have my 4wd back! Big thankyou to Rob (aka Cecilthesausage) for the part
     
  37. karls s3

    karls s3 Member

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    Hi mate was this easy to fit..
     
  38. s3 Hoggy

    s3 Hoggy Whats going on???

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    It wasn't that hard as such, I done it on ramps as you are best off with as much room as possible. It's just a case of removing the cover plate that protects the haldex plug, then unplug it there and also unplug the haldex at the controller itself, two Allen bolts hold the controller on undo these and your away! You loose a spoon full of oil. Then just repeat in reverse to fit the new one, holding the gasket in place is the biggest pain in the arse! I would reccomend getting the top screw in first a couple of turns then the bottom ensuring you still have the gasket it the right place. Tighten it all up and reconnect the plugs and your there.
    So yeah it's not a difficult job just fiddly and I kept getting **** in my eyes!
     
  39. karls s3

    karls s3 Member

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    Cool cheers mate as I will need to get hold of one soon and fit it..
     
  40. cecilthesausage

    cecilthesausage ...It's Never Finished...

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    No bother mate glad to help nothing worse than a sick S3:crying:
     
  41. s3ben19

    s3ben19 New Member

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    how much and where do you find these contol units
     
  42. cecilthesausage

    cecilthesausage ...It's Never Finished...

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    I sold mine to Hoggy for £100 pound which I think is about the going rate.... Dont know how often they come up though bud:think:
     

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