The contact owns a 2001 Audi A4. The contact stated that the ABS warning light was illuminated on the instrument panel and the brake warning light was flashing. The vehicle was taken to an independent mechanic for diagnostics where the mechanic advised the contact that the ECU module would have to be replaced. The vehicle was not repaired. The approximate failure mileage was 112,000.

- Los Angeles, CA, USA

ABS module failure.

- Calgary, AA, USA

2001 Audi A4 with about 105K miles on. ABS sensor is faulty and this problem is very widespread amongst Audi A4S built around this time. It is a $1500 - $2000 repair for a part that really doesn't seem to go bad with this frequency in other cars. For an example of the score, see this site. This is just one of many sites with similar complaints around this issue: Audi-VW-ABS-recall.blogspot.com/2005/07/Audi-and-VW-please-recall-cars-between.html.

- Cary, NC, USA

2001 Audi A4 2.8 ABS brake system controller failure.

- Pleasant Valley, NY, USA

ABS control module failed. Modules are defective and Audi should recall them. Online research shows thousands of Audi/VW car owners have experienced this same problem. Cost to replace module is $1500-2000 dollars. VW has issued recall of this ABS module, but Audi has not (even though same exact part). NHTSA needs to put pressure on Audi to recall this component, they are defective, unsafe, and could lead to accidents.

- Copley, OH, USA

1. one day suddenly my Audi 2001 A4 starts to show ABS and brake light to be failing. 2. the failure when diagnosed seems to be a problem with Audi's ABS control unit, and that needs to be repaired. 3. I have not repaired it yet, because dealers quoted a huge price of more than 1500$ to fix the ABS control unit.

- Redmond, WA, USA

While driving in Suburban traffic, I noticed the brake pedal fully dress when I attempted to slow from about 30 mph. Upon subsequent stops, there was a metal on metal sound. Upon inspection, the right front outer pad had completely detached from backing plate. The car was inspected by Audi only 3K miles earlier and there was no indication of brake pad wear. Neither the dealer nor Audi would acknowledge or accept responsibility.

- Westborough, MA, USA

The brake squeals 90% of the time being applied, it happened since a few months ago. Brought to a local dealer a few times for the problem and reported with "cannot replicate the problem" and "noise is normal for some brakes", while the problem is actually getting worse and now the brake is making the squealing noise even after releasing the brake and last for one or two seconds - it happened especially after the foot brake was applied for more than 15 seconds and then been released (e.g. after waiting at a red light).

- San Gabriel, CA, USA

In searching for complaints filed for 2001 Audi A4's I noticed a number related to very poor braking in wet weather. I experienced the same problem with my 2001 A4. Audi does have a solution for this problem. The rotor backing plates must be replaced with a different design. When I brought it into the dealer for routine service and mentioned the problem no one in the dealership was familiar with the problem. A factory rep. Was visiting the dealership at the time and was familiar with the problem. He ordered new backing plates which, I am told, can only be ordered by a factory rep. It took 3 months for the parts to reach the dealership. I haven't had the problem since the new backing plates were installed.

- New Fairfield, CT, USA