[s-cars] ABS issue

[dgraber460 at aol.com]

My car has been doing a little ABS pump every time the car slows to 10 MPH for some time (like over a year).
I have checked and changed all the usual suspects except the master cylinder and servo. I flushed the Pentosin, changed the bomb, and swapped in replacement front sensors (reseated all front and rear) after checking the teeth on all the axles (all very clean - gotta love the Colorado climate). 
Someone suggested checking codes as they will show a particular offending wheel sensor. Checked the codes in the brake circuit and got a code of;
0265103050 BB 37175
This would not reset even after I shut the car off and restarted. Is it in fact an error code or some other information? 

Dennis Graber 
720-838-0558



-----Original Message-----
From: mike schowengerdt <urdrquattro at yahoo.com>
To: Young, Steve <sryoung at trane.com>; S-Cars <s-car-list at audifans.com>
Sent: Tue, Jan 12, 2010 6:31 am
Subject: Re: [s-cars] ABS issue


first thing to do is re-seat all wheeel speed sensors , if that doesn't do it , 
ull them out and look carefully at the speed rings (rotate the axle and look 
ll the way around for cracks or rust filled teeth) most common problem is the 
ront sensors get disturbed when cv joint or suspension work is 
one.........HTH............m


_______________________________
rom: "Young, Steve" <sryoung at trane.com>
o: S-Cars <s-car-list at audifans.com>
ent: Mon, January 11, 2010 11:11:13 PM
ubject: [s-cars] ABS issue

ister...
Let me start by saying this could conceivably apply to any ABS equipped car.  I 
ought a B5 A4 Avant, 2.8L, 5sp about 15 months ago.  I bought it with the ABS 
ight on and the flashing brake light.  Typical ABS module failure.  I got 
round to having it rebuilt last month.  Reinstalled it and no lights...cool.  
r so I thought.  Now I have the ABS activating on 9 out of 10 stops regardless 
f road condition.  I am not convinced it is the module, and can't help but 
onder if this situation is what caused the module to fail in the first place.  
ould this be a bad wheel speed sensor fooling the ABS system into thinking it 
eeds to compensate for slippery road conditions at all times?  Anyone dealt 
ith this issue before??  TIA
Regards,
Steven Young, CEM
roject Developer - Connecticut / New York / Vermont Territory
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