ABS Light Due to Control Module Failure on Audi A4

Problem Description and Possible Solution

The anti-lock brake system (ABS) control module may fail causing the ABS light to illuminate. Failed modules should be replaced to restore ABS operation.

Problem Data
RepairPal Verified
Average mileage: 149,208 (99,400–200,000)
7 model years affected: 1998, 1999, 2000, 2001, more2002, 2003, 2004
12 people reported this problem
Viewing 1 - 3 of 3 comments
ABS and brake light came on at the same time, failed NYS inspection due to the inability of the computer to be read while having this fault indication. Replaced module at a cost of $1,200 and it past NYS safety inspection.
ABS light with the triangle warning light.

Replaced all four wheel sensors. No difference, rear wheels will lock up if brakes are applied very hard. Same warning lights on.