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 its 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?? Im 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
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 its 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?? Im 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
Joe.
