The problem is the ABS control module (i.e., you no longer have anti-lock brakes). If you try to communicate with the module with a VAG-COM, you will get errors. The dealer will charge $1200 to install a new unit. But I have developed a way to repair your existing module for less than a tenth of that.
Send me an email for details: sidespar@yahoo.com
90' 90 Quattro20V
00' S4 - totaled
01' S4
05' SV650N
2.7T DIY coolant system flush/t-belt swap
Need timing belt tools? I rent my out - send me an email for info!!
Need your ABS module repaired? Email me!