[urq] ABS Failure

[Ingo Rautenberg]

The following message was bounced off the audifans listserver  
(apparently due to me attaching an image file to the original  
email).  Hence, I have removed the image.  This was what i wrote  
Maurits on Monday morning.  Interested to find out what the outcome is:

Maurits,

Not sure how it is with the urq ABS cars, as we never got those. But  
obviously, something was disturbed when the shop did this work and so  
I would bring it back to the shop to have them fix the problem they  
obviously must have caused.  ABS sensors usually plug into the hub  
housing, which in the case of the Urq is part of the ABS Urq strut  
housing -- in which case the shop very well may have had to unplug  
the sensors and may not have pressed them in far enough (possibly too  
far) when they reassembled. Or maybe they forgot to attach one or  
both altogether. The sensors read the teeth on the halfshaft and  
compare that rotation to all three other wheels.  If one or more  
doesn't read a viable signal, the ABS is disabled.

I have attached the relevant page for you to see what I mean<removed  
for the list>.  Good luck.

Ingo

On May 24, 2009, at 8:14 AM, Maurits Jonkergouw wrote:

> Hi again, recently I had the front strut mounts done (at yet  
> another shop) and now the ABS Off light keeps coming ON. If I  
> manually push the ABS Off switch OFF, the light stays on, but if I  
> push the ABS Off switch ON, the ABS light goes out, but turns on  
> again 20 seconds later. I also confirmed the ABS itself doesn't  
> work if no matter the ABS Off light is ON or OFF.
>
> So the question is: do you need to detach the ABS sensors from the  
> wheels or touch the ABS system in any way in order to replace the  
> strut mounts?
>
> 2 steps forward, 8 steps back...
>
> Thanks.
>
> Regards,
> Maurits
>
> 1986 quattro GV
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