Two problems related to brake antilock control unit/module have been reported for the 2001 Audi A4. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2001 Audi A4 based on all problems reported for the 2001 A4.
I'd like to file a complant for a faulty vehicle component on my 2001 Audi A4 (mileage: 30,000 miles). The abs and brake warning lights are coming on simultaneously. I've been reading a lot of similar complaints on the internet (that's how I found this site). Dealer says there's a "fault code in the abs control module". . . And wants $1500 (!) to repair it. The abs unit should not be failing as frequently as it seems to be in this car. For a $1500 component to malfunction when it's rarely actuated is beyond comprehension. The TSB should force Audi to perform a recall and/or compensate customers for this outrageous problem.
Audi has faulty automatic braking system controller units. Their 1998 - 2002 units have a very high incidence of failure in the electronics component. They have done a recall for the exact same part for the vw jetta, but not for the Audi's. They require $1,700 to repair it, so many people leave it as is, which is unsafe.