[s-cars] ABS Off Light Problem
barmstea at voanews.com
Mon Sep 14 10:08:54 PDT 2009
Thanks Tom and everyone.
Mark Pollan lives nearby and has offered his help.
Will report the results!
Tom Green wrote:
> There are several listings for owners of diagnostic software willing
> to help such as
> this one, or you may get a direct reply from this list. I believe
> that is what Joe was
> suggesting by asking your location. You may need your own VAG 1551/2
> (OBD-2 to 2X2) but there are Chinese knockoffs on ebay now that are
> just as good
> as the $50 Audi tool. The point is you don't need to drop serious
> coin for your own
> system if you aren't going to be doing a lot of DIY work to justify
> the cost.
> Be sure to check all the information available at ross-tech as Joe has
> with his link.
> There have been a couple of reports of a cheap ebay diagnostic reader
> that is
> programmed for most Audi modules and worked fine on s-cars. It was
> either on
> this list or the QW forum. I don't have any direct knowledge as to
> how comprehensive
> it is; i.e., does it give secondary information, or how much data was
> just stolen from
> Scott Mockery has some great diagnostic information on his site. If
> not useful now, it
> will be at some time for s-car owners. At least, code clearing is
> covered there:
> There are some VAG-COM forums on AW and QW but they are marginally
> useful. I
> find they are mostly populated by newer car owners that bought them as
> a gadget
> and don't have a clue how to use the software, expecting it to lead
> them by the nose
> like a MAC laptop.
> The C4 sensors clip into a copper (colored?) holder that should
> automatically place it
> in the correct position. The clips can be damaged or corroded beyond
> use and are
> replaceable. If the sensor touches the rotor it will be damaged very
> quickly and require
> Some listers have reported problems communicating with the ABS module
> on early
> model S4 cars. I have two S6 vehicles so I sometimes forget there are
> You should be able to handle it from here. Good luck.
>> -----Original Message-----
>> Date: Mon, 14 Sep 2009 10:59:46 -0400
>> From: Brett Dikeman <brett.dikeman at gmail.com>
>> Subject: Re: [s-cars] ABS Off Light Problem
>> To: Brian Armstead <barmstea at voanews.com>
>> Cc: s-car-list at audifans.com
>> <9d9c4a330909140759g18ce02b7j7e77a4dbeac536f3 at mail.gmail.com>
>> Content-Type: text/plain; charset=ISO-8859-1
>> 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
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