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Have your views on this problem please, Thanks

Discussion in 'A3/S3 Forum (8L Chassis)' started by jitvv, Jan 26, 2007.

  1. jitvv
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    jitvv Active Member

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    [Jan 26, 2007]
    Hi Guys,

    I reported 3 months ago that I was getting a locking feeling from the back end of my 2000 S3 (with ESP) I had Hitchin Audi investigate the problem. Let me start from the beginning I remember the day this first happened. I drove the car on the Thursday Night in Oct, Then Friday morning as sonn as I move of I get this locking felling as if the rear wheels were being driven with the brakes on. (this only happened when turning left or right, fine in a straight line.

    Well Hitchin Audi said it was the Haldex diff that was knackered, so I replaced the dif with a second hand one, car does the same thing. So I took the car to a Diff and Gearbox specailest, After checking the diff and my old diff that there is nothing worng with either of them, but he did say the car is parmentley in 4 wheel drive from the minute the car is started hence why I am getting the locking feeling as all the wheels are spining at the same speed.

    So car went back to Hitchin Audi they said it’s the controller causing the problem. So a new controller was fitted car still has the same problem. Then on further investigation they tell me the car has been lowered and the cambers on the rear are out causing the problem, since I have had the car it has not been modifed I asked the master tech how can this problem happen over night with no parts being changed?? I have drove the car for the last 9 months with no problems with the cambers. He said until cambers are with spec they can not investigate any further..


    So now the car is at my friends garage, he has found if you switch the ABS and ESP off using a Daig tool the car drives fine, 2 WD mode, but soon as the ABS and ESP is switched on I get the locking feeling, he also said the car is in 4WD mode. There are no error codes from any sensors or electronics. No errors at all. So it seems no one knows whats wrong with my car its been 3 months now with no motor!!

    I did a little search on the net and found out how the haldex system works and where it gets its feeds from, it said it gets a feed from the ABS/ESP, Engine Cotrol module and the handbrake!!! So I called my friend and sent him the link, he said to me the only fault they have found with the car was the near side rear cailiper handbrake cable was in the locked on postion no matter if hand barke is up or down. New cables and caliper have been ordered (7-10 days from Germany). Another intresting thing I found on the haldex site was if the haldex detects a defect in operation it goes in IMP Mode which is 4WD at all times.

    My Questions are has anyone else heard of such a problem?? I’m not sure if the handbrake/ rear caliper being locked (but wheel does move freely) would cuase this problem have to wait and see. This would make sense becuse when the problem started the handbrake would have been on overnight, but i don't think it will be this to be honest.

    Looking for help and advise?

    By the way sorry for the long post. Any help/advise greatly appericated thanks:confused: :confused:
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  3. Lovegroover
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    Lovegroover Member

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    [Jan 27, 2007]
    My car has also started doing this, on tight corners (full lock) especially on cold mornings it feels as though a back wheel gets dragged or 'locks up'. At first i put it down to a sticky handbrake which i can feel ping off when i drive away in the mornings, this is also my near side rear! (coincidence)??
    Mine has only literally just started doing this and is definitely worse when cold. I really thought i was gonna be shelling out for a new diff, but it seems from what you've found it could definitely be sensor related. Interestingly about a month ago i had all my camber done, so this could feasibly be related too! I might try pulling the haldex fuse to disengage 4 wheel drive and then driving to see how it behaves?? (anyone know how safe it is to do this?) The problem with mine is it only seems to happen on the first corner in the morning when cold. The rest of the time it's fine, how about yours? The hand brakr theory would make sense as i'm sure my caliper/handbrake is sticking. Maybe this is provoked by the camber adjustment of the wheel?
    Keep in touch and let me know if the handbrake cable etc. cures any problems. :crying: Joe.
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  4. mattyboy199
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    mattyboy199 Active Member

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    [Jan 27, 2007]
    bet that cost a few quid.
    #3
  5. jitvv
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    jitvv Active Member

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    [Jan 27, 2007]
    Mine seems to do it all the time but I guess it would as the handbrake was still locked on! Will give an update once sorted hopefully! (Fingers toes everything crossed its the calliper)

    It has been very painful handing over the cash to Audi and the car still having the same problem as it started with! Not sure how I stand on the grounds of mis diagnosis?? And Audi just throwing parts at the car hoping that one will fix the problem!!

    Had a similar problem with a Alpina I owned luckily the work was done under warranty with that car the ASC+T light kept coming on and staying on they changed everything the invoices came to well over £3000 pounds. BMW and the car for 4 weeks went to pick it up when they said it’s fixed. Drove 100 yards down the road light came on again. Took the car to my friend’s garage who is a BMW specialist. He had the car half a day replaced a Bracket on the TB that holds a control unit for the ASC+T problem fixed bracket price £9.00! That time all was under warranty but when will main dealers be held responsibly for mis diagnosis?? Plus how can Joe public prove it!!

    Will report back once part has arrived from the motherland!!
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  6. jitvv
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    jitvv Active Member

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    [Feb 5, 2007]
    Right had the brake calliper changed and the car is still in 4 wheel drive as soon as it’s started. Not even moving. They know this as they have it on the ramp. With the car off the rear wheels spin fine. But as soon as the car is switched on the rear wheels are locked.

    I am at my wits end, 3 months now and no body know what’s wrong. Any help greatly appreciated.

    Jit
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  7. simch
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    simch Active Member

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    [Feb 5, 2007]
    Sounds like it could be the transfer box then. Try removing the propshaft and see if it still thinks its in 4wd and trys to drive the back end, or if the transfer box is locking up, and not driving the rear end?

    BUt still sounds like its the haldex clutch, be careful of confusing the rear diff with the haldex clutch!
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  8. jitvv
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    jitvv Active Member

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    [Feb 5, 2007]
    Simch,

    Can you please tell me more, where is the transfer box loacted? and what do mean not to confuse the Haldex clutch and the diff?? the clutch is within the diff right?

    Many thanks for you help.
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  9. Lovegroover
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    Lovegroover Member

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    [Feb 13, 2007]
    Gutted, i thought that would solve it. What with the weather coming warmer mine has been fine - which makes me wonder if it is a diff oil related issue for myself, mine has only ever done it on the first corner on a cold morning. Never anymore and touch wood has been fine the last couple of days. Oh mine has only ever done it turning hard right?? Does yours do it in either direction??

    Just to correct that it did it this morning turning left!! :confused:
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  10. simch
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    simch Active Member

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    [Feb 13, 2007]
    transfer box is on the rear of the gearbox at the front, basically the bit that sned s FWD to the rear fo the car!
    #9
  11. Nerville
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    Nerville New Member

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    [Aug 15, 2009]
    Was this ever resolved?
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