[s-cars] 95 S6 Brake light

[Rit Bellis]

My 93 s4 had similar red light issues before I replaced the bomb, and then
after when the hydraulic fluid was a tad low, the light would flicker on
slight grades. Once I filled the hydraulic reservoir properly, the issue
went away and did not reemerge for about 2 years.  Now, however, I have a
whole new issue: I start out with a rock hard pedal, then about thirty
seconds after starting, the pedal softens, and I can push it all the way to
the floor.  If I do this two or three times, the light goes out, pedal
pressure is restored to normal, and the light stays out till the next time I
shut the car off.  If I don't do this, the pedal acts like the bomb is dead,
the brake light stays on, I have virtually no brake assist for several
miles, and eventually (10 minutes or more) the brake light goes out and I
get assist back.  I have no observable fluid leaks in either the hydraulic
or the brake reservoirs.  It feels like the brake system has air in it, but
since hydraulic assist is utterly separate from brake fluid, I am flummoxed.
Any ideas, list?  It has been about 2 years since I replaced the bomb.

-----Original Message-----
From: s-car-list-bounces at audifans.com
[mailto:s-car-list-bounces at audifans.com] On Behalf Of Manuel Sanchez
Sent: Tuesday, October 14, 2008 7:23 PM
To: s-car-list at audifans.com
Cc: Mark Underwood
Subject: Re: [s-cars] 95 S6 Brake light

I thought the Brake Pad warning light was illuminated in the display  
with the amber dots (can't think of the proper name of that display  
at the moment), not the Red brake warning light?

I also have the little Red idiot light that stays on a bit longer in  
the mornings, and I also get the the little Red light to flicker on  
and off for no apparent reason at times when I am just driving down  
the road. I don't have to be inducing any inputs (steering or  
braking), just driving straight and steady and I'll get a little  
flicker now and then, totally random. Sometimes there is a bump, but  
sometimes the road is as smooth as glass (well not really).

I have no proof but I suspect the handbrake switch (I used to own a  
Triumph TR-6, and I had this failure on that car, along with all  
sorts of other Lucas electrical gremlins), just because it's on that  
circuit I think.

I too have gone thru flushes of the Pentosin, 2 bombs, steering rack,  
and brake pedal pumping that did not yield a stiff pedal for a long  
while to no avail. When I returned my first replacement bomb I did  
this because I was under the assumption that the bomb would fix the  
morning start up check valve leak. It didn't in my case. I suppose I  
could have received 2 defective replacement bombs, but I was thinking  
the chances of that were unlikely, but who knows.


Dennis if you ever find out your problem, and I presume you are  
talking about the Red light, please let me know. Sounds like we are  
not alone.

Regards,

-manny




On Oct 14, 2008, at 3:00 PM, s-car-list-request at audifans.com wrote:

> Message: 4
> Date: Tue, 14 Oct 2008 11:16:36 -0600
> From: "Jerry Scott" <jerryscott at wispertel.net>
> Subject: Re: [s-cars] 95 S6 Brake light
> To: <dgraber460 at aol.com>
> Cc: s-car list <s-car-list at audifans.com>
> Message-ID: <8CDEBA1B0B874A339EFD9CD94204123D at Jerry5976>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> 	reply-type=original
>
> This could be the brake wear indicator.  If you cut off the  
> original wires
> that go to the pad sensor, they need to be shorted at the  
> connector.  Try
> unplugging the connector and cleaning the contacts, then  
> reconnecting. Make
> sure that the shorted wires are making good contact.
> Jerry
> ----- Original Message -----
> From: <dgraber460 at aol.com>
> To: <s-car-list at audifans.com>
> Sent: Monday, October 13, 2008 8:27 PM
> Subject: [s-cars] 95 S6 Brake light
>
>
>> My 95 S6 brake light issue has been getting gradually worse for  
>> about 3
>> years.
>> At first it would like many others?just not go out right away at  
>> start up.
>> That has been getting progressively longer and longer and now it  
>> is coming
>> on (off & on) during the drive.
>> I have flushed the fluid, replaced the bomb (new) and the pump.  
>> Fluid is
>> above the line stopped and running.
>> If idling in the garage and turn the wheel left to right the light  
>> will
>> comes on and go off. Use the brakes it comes on and goes off. Hit  
>> a bump
>> it comes on and goes off
>> The brakes have never given me any obvious reason to be concerned  
>> about
>> failure as they have felt the same through all of this. They don't  
>> feel
>> crisp but not as if they cold fail. The usual bomb test of pedal  
>> pumping
>> with the car off does not give a rock hard pedal after any number of
>> pumps. Never did.
>> Pads are all good and rotors are normal for their miles.
>> Equipped with G60s & drilled rotors. I would like it to feel sharp  
>> like
>> the URQ with the same equipment.
>> Any ideas? TIA
>>

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