A6 / S6 (C5 Platform) Discussion Discussion forum for the C5 Audi A6 and S6 produced from 1998-2004

brake switch problem?

Thread Tools
 
Search this Thread
 
Old 08-20-2008, 10:29 AM
  #1  
AudiWorld Super User
Thread Starter
 
ArTT Vandelay's Avatar
 
Join Date: Mar 2001
Posts: 4,136
Likes: 0
Received 0 Likes on 0 Posts
Default brake switch problem?

So, while my wife had the car the last two weeks, it flashed the brake indicator on the dash and beeped at her, of course freaking her out. it was still driving and stopping fine, so I told her it was probably low fluid and I'd take care of it when she got home.

Vag tells me it sees an intermittent signal from the connector, so last night I replaced the brake switch (5.89 from the stealer).

This morning it beeped at me.

Any ideas why? I don't know what to look at next, other than bleeding the brakes and replaciing the fluid...
Old 08-20-2008, 10:41 AM
  #2  
Tech Guru
 
4Driver4's Avatar
 
Join Date: Oct 2002
Posts: 34,410
Likes: 0
Received 107 Likes on 98 Posts
Default No STFA for you? Trying searching for module master.

BBA Reman is good too.
Old 08-20-2008, 11:24 AM
  #3  
AudiWorld Member
 
2000 A6 2.7t 6m's Avatar
 
Join Date: Jun 2006
Posts: 147
Likes: 0
Received 0 Likes on 0 Posts
Default 4d4 is saying ABS control module failure, probably correct.

Best way to check is to try to connect to the ABS module while the light is on. If it will not connect, this is your issue. ABS will not work while this light is illuminated. It starts off as an intermittent problem and becomes more frequent with time.
Old 08-20-2008, 11:30 AM
  #4  
Tech Guru
 
4Driver4's Avatar
 
Join Date: Oct 2002
Posts: 34,410
Likes: 0
Received 107 Likes on 98 Posts
Default There is an easier way to check.

Get out of the car and walk around in front of it.
Look at the grill.
If you see four interconnected rings, the module is toast.
Old 08-20-2008, 11:33 AM
  #5  
AudiWorld Member
 
Fatdontheking's Avatar
 
Join Date: Dec 2005
Posts: 268
Likes: 0
Received 0 Likes on 0 Posts
Default

Isn't that the truth.
Old 08-20-2008, 11:36 AM
  #6  
AudiWorld Member
 
basso's Avatar
 
Join Date: Dec 2006
Posts: 395
Likes: 0
Received 0 Likes on 0 Posts
Default Re: my car has doe the same on and off 02 s6

no codes my indy over filled the brake fluid ress and its been fine for 2 months.
The word brake and the beep means 2 things as far as i could find out
low fluid
hand brake on
try removing the screen in the ress and fill to the top of the neck its hard to see what the level is with the screen in it .
Old 08-20-2008, 11:44 AM
  #7  
Tech Guru
 
4Driver4's Avatar
 
Join Date: Oct 2002
Posts: 34,410
Likes: 0
Received 107 Likes on 98 Posts
Default Low fluid will not cause an ABS light. If the ABS light was on, your problem will return when the..

...weather changes.

The S6 is also prone to cluster issues.
Old 08-20-2008, 12:26 PM
  #8  
AudiWorld Member
 
basso's Avatar
 
Join Date: Dec 2006
Posts: 395
Likes: 0
Received 0 Likes on 0 Posts
Default Re: I dont think hes saying his abs light is on I think he saying the word brake is lit that

is why I sent my post
what is lit abs or the word brake?
Old 08-20-2008, 12:35 PM
  #9  
AudiWorld Super User
 
Grapeking's Avatar
 
Join Date: Apr 2001
Location: Northern NJ
Posts: 9,211
Likes: 0
Received 0 Likes on 0 Posts
Default As 4Driver4 implied, your ABS controller is going south. You options are as follows:

1. Have your friendly local dealer take care of this, with a new controller. This will cost you roughly $1100 - $1200 and you'll be good to go.

2. Invest about an hour and a half of your own time, plus some $225, and install a rebuilt controller that you source from ModuleMaster. Easy fix (I give it a 3 out of 10 on the difficulty scale, with 10 being most difficult), works great.

Since I don't make $800 an hour, I chose the latter option recently and it has worked out great. As an added bonus, Mrs. Grape is much happier in the car now, as well.
Old 08-20-2008, 01:35 PM
  #10  
Tech Guru
 
4Driver4's Avatar
 
Join Date: Oct 2002
Posts: 34,410
Likes: 0
Received 107 Likes on 98 Posts
Default "Vag tells me it sees an intermittent signal from the connector" It was the ABS light.

Not said, but it had to be. The other code is that it beeped. IIRC, the ABS beeps a warning too.

Speculation.


Quick Reply: brake switch problem?



All times are GMT -8. The time now is 04:28 AM.