Dubz Minus 3

I have a 99 A6 that had the ABS module fail, vag-com would not find it at all. I replaced it with the ABS module from a 99-00 Passat. The vag-com will find it now, and shows me throwing a pass. side rear abs speed sensor code. Well our shop recently picked up another 99 with a bad module and also replaced theirs with a Passat module as well and they happen to be throwing the exact same code as me. Does the module need to be recoded to the A6? Or is it just coincidence that both cars need the same sensor?

cparke

I'd use DTM (output diagnostic test mode) to thoroghly check out the new ABS

cparke

Passat is equivilant to A4, but you have an A6.

Make sure you follow the right coding instructions for the ABS module part number that you have installed!<ul><li><a href="http://wiki.ross-tech.com/index.php/Audi_A4_%288D%29_Brake_Electronics_%28Bosch_5.3_AB S/EDS/ASR/ESP%29">ABS Coding</a></li></ul>

Dubz Minus 3

im new to vag-com, dont actually own it, but i have friends that do, so all that up there is mumbo jumbo to me lol. On the wiki.ross-tech site, do i need to do the login and coding? or just the coding?

cparke

Find your engine code, print out the wiki page for your ABS, follow instructions

Dubz Minus 3

ABS/brake light on the dash and super dusty front wheels? Or am i looking at other problems as well?

cparke

Dunno---code it right first, check the ABS function on the four wheels

reddiamond

its not unusual for rear speed sensor code to be caused by bad module with vag com hooked up you can graph speed sensors in measuring blocks look for 1 that is off also i have seen sensor ring on cv joint split and throwing signal off