Brake Electric Antilock Problems of Audi A4 - part 1

My Audi, along with thousands of others have had their abs control unit malfunction because of design. This malfunction causes the abs to not work on the affected vehicle. Volkswagen, the company that produces Audis and vws actually recalled this exact part on their vw vehicles, but for some reason refuses to correct the problem for their Audi customers. The cost to replace this control unit is $1,400 - $1,700, and as such I have been driving my vehicle without its abs functioning. Below is a description of the recall for this exact part, but on the vw jetta: "2002 Volkswagen jetta GLS NHTSA recall id number: 02v031000 recall date: Jan 31, 2002 component: service brakes, hydraulic:antilock potential units affected: 55000 summary: on some passenger vehicles, short circuits can occur within the electronic control unit of the anti-lock braking system (abs). Consequence: this can result in a fire. Remedy: dealers will replace the abs control unit. Owner notification began March 8, 2002. Owners who take their vehicles to an authorized dealer on an agreed upon service date and do not receive the free remedy within a reasonable time should contact Volkswagen at 1-800-822-8987. Notes: Volkswagen of America,inc," please look into this issue and help vw to make the right choice for the safety of their customers and others on the road. Thank you for your time and attention to this important matter!.

See all problems of the 1999 Audi A4 🔎.

Braking performance seems to be dramatically reduced in wet, and especially wet and cold, conditions. This happens often, but does not happen regularly, and always after prolonged high-speed driving without brake application. The reduction in performance seems much more dramatic than would be expected from typical reduction in brake performance in these conditions.

See all problems of the 1997 Audi A4 🔎.

Needed to replace the abs control module when my Audi only had 88000 miles.

Abs computer out. From people I have talked to it's a frequent problem in these cars. It is quite expensive to replace.

See all problems of the 1998 Audi A4 🔎.

Recently the abs and brake alarm came on and when I went to have it repaired the service man said there was a four week back order on the abs module. He said that this part is going bad in all the Audi A4's and some a 6's and he can't even get the part from a junked Audi.

See all problems of the 2000 Audi A4 🔎.

Audi A4 abs malfunction. 1998 2. 8 liter quattro.

The abs system of my 1999 Audi A4 intermittently fails. I intend to have it repaired as this is a safety issue. Repair shop, lusti motors in san diego, indicated that they've repaired other Audi's with the same issue recently. The cost of repairs is approximately $2,000.

Faulty abs control module. . . Cause loss of abs braking in 2000 Audi A4 with on 60k miles. This has cause many close calls as it is $1500 to repair.

Car has only 62,000 miles, but anti-lock brake system controller failed. Manufacturer refused to replace; replaced at my expense.

My car has less than 50,000 miles and I having abs brake problems. The brakes pulse a low speeds for no apparent reason. There are no warning lights displayed from a failure in this system. This car has not been in any accidents and it was dealer maintained until the warranty ran out 1 year ago.

Intermittent and ongoing problem when applying brakes. Pedal would go to the floor. Had to use the emergency brake to stop the vehicle. Dealer notified.

See all problems of the 2001 Audi A4 🔎.

Car experiences diminished braking abilities under wet/cold conditions. If roads are wet, even if above freezing conditions, braking suddenly to avoid other traffic results in near crashes or dangerous swerving to avoid accident. This is not due to poor road conditions but directly related to the Audi's braking abilities in wet conditions. Very dangerous and unpredictable. Have recently traded in vehicle and incurred large financial loss due to this and other serious problems.

Nar 1/15/2003. The vehicle often failed to stop during wet conditions. When the consumer applied the brakes, there was a delay before the brakes engaged, which has happened twice. It always seems to be a problem with the left rear brake.

My 1999 Audi A4 experiences delayed braking during periods of moderate to heavy rain.

After sitting for a couple of hours the brakes do not kick in right away if you immediately start the car and back up. You need to push the brake pedal hard and to the floor before the car will stop. Like there is an air bubble in the hydraulics. Many who have driven the car have nearly backed into other cars in parking lots. Fortunately there havent been pedestrians behind the car when this happened. 2 days after I bought the car I contacted prestige about the problem they said there was no sol the car still has this problem every day. You cant tell if the car is going to stop or whether it is going to roll into something. Once the car runs for a bit the problem is gone. On 3/15/01 I brought the car in & explained the brake problem. The svc agent said this was not normal & they would fix it. The problem was not fixed. On 8/2/01 I brought the car to prestige again. This time I insisted they fix the problem as there had been too many close calls. On 8/3/01 prestige said again it was a known problem & there was no fix. I insisted they keep the car longer to recreate the problem. . On 8/2/01 I called Audi client relations & reported the problem. Audi said they would fix the problem. She assigned case #10530656. On 8/7/01 the svc manager from prestige called & said they had recreated the problem & needed to get Audi involved to get the problem fixed. On Friday, 8/10/01, prestige said they were still working with Audi to get the problem fixed. On Tuesday 8/14/01, prestige left me the following voice mail "I just had a short discussion with my supervisor (dennis). He is in contact with Audi & we are trying to figure out what we might be able to dowhat were trying to do is see if Audi will make any adaptations to that or if there are any other options availablehopefully we should have it resolved it by Friday. " on 8/17/01 prestige called & said there is no fix. I need to let the car warm up for 20 seconds before I drive it in order for the brakes to work properly.

Control arm bushing started squeaking indicating failure - did not know that the vehicle's instability at higher speeds and inability to track in a straight line were also due to worn control arm bushings. . Read more...

Car always has a delayed response when applying brakes when they are wet.

Wet braking problem--I have no brakes (delayed) for the first 2-4 seconds during, or after a rain.

In rain there is a 2 second delay after the brakes are applied before they bite. This only happens in wet conditions.

Brakes take 2-3 seconds to respond on first use when driving in very wet conditions. Has happened about 12 times in the last year. Dealer service department offered no fix.

In wet weather, 1 - 2 second delay from brake pedal application to brakes deploying. Dealer contends that brakes are operating within specification.

It's the Audi wet braking problem.

Braking is delayed 3-4 seconds in rain and or snow conditions. Additional pressure is required to stop vehicle.

Cruise control inoperative. During high speed braking car shimmies and hops. Problem began after serviced by Audi as per Audi brake recall. In the last 12 months my Audi has spent 2 months at the dealership for repairs. This vehicle is a lemon.

Brakes do not resond for a couple of seconds when driving at highway speeds in wet road conditions.

Under wet conditions, braking is delayed. Especially noticeable when traveling at highway speeds, braking suddenly, and for a moment, brakes seem to not work.

Braking is poor in wet conditions. Takes 1 to 2 seconds before brakes respond.

I was driving at night on the road entering a highway at about 35 mph when I spotted something on the road. Being that my vehicle is awd and equipped with abs I broke and swerved. I felt no response form the brakes and by that time (2-4 seconds) my car had lost control and started to spin. The car spun and went to an exit lane and hit another car forcing it off the road before coming to a complete stop. The car is now undriveable.

Under wet road conditions and hard rain, when applying brakes, consumer has to pump brakes a few times before there is any braking action. Dealer cannot find problem.

On numerous occasions, when driving in very wet conditions, there is a very noticeable delay before the brakes have any effect. This can be up to 2 seconds or so, and depending on driving conditions could lead to an accident. This has not happened to me yet, but I am concerned about this defect.

See all problems of the 1996 Audi A4 🔎.

I continue to have problems with the brake system on this auto, even on dry surfaces. It appears that the problem is a misaligned interface between the all-wheel drive (quattro) system and the abs. The problem is one of software, not hardware, and Audi needs to replace the appropriate chip.

Vehicle experiences degraded brake performance in wet conditions. Dealer is scheduled to inspect vehicle.

While driving in heavy rain, the rotors felt as though they had a sheen on them that caused the brakes not to function immediately. Almost as if the vehicle was sliding on ice. This occured 4 times in the coarse of a 150 mile trip from philadelphia to new york city.

Car brakes unable to stop car during wet braking.

Brakes take 2-3 seconds to grab during wet conditions. This has happened many times. 2000 models have brake shields that 1999's do not have. Dealer says they cannot do anything until Audi tells them officially. Please investigate.