[s-cars] ABS Off Light Problem

[Brett Dikeman]

On Mon, Sep 14, 2009 at 7:33 AM, Brian Armstead <barmstea at voanews.com> wrote:

> Brake pad sensor light is off after I did what you suggested - thanks.
> Took out the ABS sensors,  cleaned them, blew out the cavity with air,
> and reinserted firmly.

Are C4 platform ABS sensors spaced with ablative caps, as on the C3's?

Second question: did the light originally come on immediately, or
after the car had been moved a bit?  If it was the latter, then
something in the ABS controller self-test found a fault.  The major
thing that is tested then is the ABS valve unit (which is what causes
your headlights to dim for a second when backing out of a driveway at
night, etc.)  Seems extremely unlikely (only thing I can think of
would be some rust or dirt was pushed back up from the old calipers
and got stuck in the unit), but I agree with Tom- you really do need
to pull codes to find out why that light is on.

Where are you located?  Someone with VAGCOM might live nearby. Make
sure they have the proper version and cables (are the S-cars 2x2
adapters?)

Brett