Service Brakes Problems of Audi A4 - part 1

Left front brake hose failed. Replaced both front hoses, bled and flushed the brake hoses as needed.

See all problems of the 2018 Audi A4 🔎.

The contact owns a 2009 Audi A4. The contact stated while driving 35 mph, the brake pedal was depressed and went to the floorboard. The check engine warning light was illuminated. The vehicle was diagnosed by an independent mechanic. The contact was informed that the master cylinder reservoir cap was cracked and had deteriorated and needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 200,000.

See all problems of the 2009 Audi A4 🔎.

My parking brake keeps setting itself and then locking in place and it will not unlock now my gear shift will not shift I have no idea what's going on and it keeps happening and then it'll stop and it'll happen again it's going to cause an accident and it burns up oil like crazy I'm going through so much oil it's not even funny.

See all problems of the 2010 Audi A4 🔎.

Audi presense kicked in so violently on the 280e freeway towards nyc from northern NJ, that my 15 y/o son now has a significant cervical spine injury, necessitating medical evaluation and treatment. The brakes were so abruptly applied by presense that we thought we had been hit by a car, but had not been in an accident. This is very dangerous, and now my son is injured, despite no accident occurring.

See all problems of the 2019 Audi A4 🔎.

I have been an Audi A4 owner for more than 10 years. During that time, I have had 2 incidents where I could have easily been killed as well as injured or killed passengers in oncoming vehicles. The latest was this morning on March 23, 2022. The other was nearly 10 years ago. My personal investigation has led me to a conclusion that I have not yet seen anywhere else. In both cases, I am trying to get into a heavy flow of traffic. I know that I will have to "gun it" to get up to speed. For that reason, I have one foot on the accelerator and one on the brake. When traffic opens to where I think it is safe to proceed, I press the accelerator while my foot is still on the brake. In the situation this morning, I intended to execute a sharp right turn into the closest lane of a road with 2-lanes going in that direction. I pressed the accelerator hard while turning the steering wheel. Instead of turning right, the car shot across both lanes of traffic, wiped out a traffic sign and entered the lanes of oncoming traffic. I had zero control. It was only dumb luck that I avoided traffic in both directions (both of which were travelling at roughly 60 mph). Even though I knew about this risk from my earlier incident, I didn't think about it at the time. I realize that my actions send conflicting signals to the car (go/don't go), but the last thing the car should do is propel itself forward with no control on the part of the driver. I don't know if this is limited to Audi or the A4, but I wanted to make my experience public to possibly avoid a serious or fatal accident by someone else. It is very avoidable with proper knowledge and attention. I'd be interested in knowing if you have been notified of any other incidents of this type.

See all problems of the 2017 Audi A4 🔎.

The car is completely not safe it seems to have a mind of its own and that’s saying that I’ve maintained everything up to par and it’s still a safety hazard.

See all problems of the 2016 Audi A4 🔎.

While driving the emergency parking brake engaged itself without warning or cause. This caused the vehicle to come to an abrupt stop. Luckily I was in a parking lot but if I had been in a high traffic area or intersection, it could’ve caused a collision. I had 2 passengers who witnessed this sudden bizarre event. There was nothing that could’ve caused this to happen. It scares me & now I’m worried this could happen again without warning. The sensor screen was beeping with a message to put my car in park before setting the brake. Made no sense why this happened.

The parking break malfunction light keeps coming on and off for the past few months. Last year the malfunction light came on and I was unable to release the parking break. My car had to be towed to mechanic for reviews. The light is now back; on and off for several months. I fear using my parking brakes.

See all problems of the 2014 Audi A4 🔎.

On my car when I'm driving anywhere after I put my cruise control on if I press up or down on the cruise control to change the speed the car will either brake or speed up and it won't stop until I hit my brakes hard and turn the cruise control completely off which is also an issue because my brakes are going out extremely fast like I need a new pair every 2-3 months and the car also burns through oil so quickly that I need to add more within 2-3 days after an oil change with no leaks and it's burning more oil than gas which is clogging up my catalytic converter. . . . . . . . And causing my emissions to be bad. . . . .

See all problems of the 2011 Audi A4 🔎.

The contact owns a 2012 Audi A4. The contact stated while driving approximately 40 mph, the check engine and low oil pressure warning lights illuminated. The vehicle was taken to an independent mechanic, where it was diagnosed with needing the engine coils and spark plugs to be replaced. While driving after the vehicle was repaired, the vehicle experienced the same symptoms as before with the addition of loss of power steering and power brakes. The contact stated that the steering wheel was difficult to turn and difficult for the brake pedal to be depressed. The contact was unable to restart vehicle and the vehicle was towed to an independent mechanic to be diagnosed. The contact was informed that the timing chain needed to be replaced. The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was approximately 138,000.

See all problems of the 2012 Audi A4 🔎.

The contact owns a 2012 Audi A4. The contact stated that an error message appeared on the instrument panel regarding the gear box module. The contact took the vehicle to the local dealer Audi memphis (1825 covington pike, memphis, TN 38128) who replaced the gear box however, the failure persisted while accelerating. Additionally, the low-pressure fuel pump fault message was displayed on the instrument panel. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was 94,000.

New factory brakes make very loud Audible screeching sound when coming to a stop. This happens just before coming to a complete stop and sometimes in the beginning of breaking. Mechanic has worked on this issue several times and reordered brakes from local Audi dealership and it is still making the sound. Dealership said its 4th generation brakes and its a problem with the coating.

My son just crashed my 2018 Audi A4 with pre sense basic and city. $20k damage in the front! no air bag deployed. It happened on a highway during morning rush hour in heavy traffic. He was driving around 40mph, traffic slow down and he did not realize until it was too late. He braked hard, but the auto brake never kicked in.

On April 25, 2019 I was driving on a city street and the Audi pre sense unexpectedly activated quite violently for about 2 seconds and then turned off. While it did not stop the car completely it did reduce my speed significantly. At the time I was the only car on the road; that is, there were no other cars within sight of mine. There was no damage that I can see to the car but I trust you can understand that this could have been a much worse situation if someone had been following closely behind me. I also trust you understand that this unexpected braking is unacceptable. The Audi service advisor told me he has seen this phenomenon before but Audi has no explanation or solution to the problem.

Involved in a three car rear-end accident. I was the very front car (car 1, white 2018 Audi A4) which was completely stopped that took the least force of the impact. Car 2 (Tesla medel s) was also stopped but took brunt of force from at fault car 3 (Dodge SUV) who came barreling in. My car took minor damage to the rear yet my 2018 Audi A4's collision protocols disabled my car and left it completely undriveable. The seat belts also pulled back and locked up leaving me unable to rebuckle my seat belt after the accident. This meant I was stuck in the middle of a busy highway unable to move to the shoulder with no protection besides the shell of the vehicle. After the fire department arrived 15 minutes later, they had to spend considerable time reading through the manual to figure out how to manually disable my brakes and took 4 firefighters (1 steering and 3 pushing) to push my car to the shoulder. Meanwhile, the at fault driver (car 3) was able to drive away from the scene of the accident after completing police activities. The collision protocol of automatically tightening seat belts, putting on hazard lights, dialing road-side service, rolling down windows partially, and braking itself was great. However, disabling the car and leaving the seat belts unusable afterwards left me in a dangerous situation that could have been even a worse second accident. A flatbed tow truck was called in by Audi roadside service and of course they recommended an Audi certified collision center.

When vehicle has been driven in wet weather and parked in the garage at 70 to 80 degrees f with the parking brake on for an extended period of time, the parking brake intermittently locks up requiring a dangerous amount of throttle to break it loose.

After having this vehicle for 18 months the car began to freeze while backing uo. There are no objects, cars or humans anywhere around the vehicle when this occurs. The car was moving at a very low speed when all of a sudden the auto locks up and the brakes engage, you have to step on the brake in order to release the vehicle. This occurs while backing out of a parking space, my garage where there is nothing near the vehicle. I have taken the car to Audi 3 times and each time they tell me there is nothing wrong with the vehicle. I have also contacted Audi USA numerous times and was again told there is nothing wrong with the vehicle . I contacted Audi's executive offices as well.

When I back out from my garage the vehicle fails to move forward when the shifter is moved from reverse to drive. I have to apply an excessive amount of pressure to the accelerator to get the car to move forward. When the front wheels engage, the excessive force from increasing the power causes the vehicle to launch forward many times almost uncontrollable with the front tires squealing. It appears the front brakes are engaged and suddenly disengages and then suddenly launches forward. There has been no assistance from the dealership to assist with the problem. This issue almost always happens after the vehicle has setting overnight in my garage and backing down a slight slope tonto the public street. . This has been an ongoing problem for the past 3 plus years of ownership.

See all problems of the 2013 Audi A4 🔎.

I was driving on the highway in rainy conditions. (driving according to speed limit) and I suddenly lost control. The car wouldn't turn when I turned the wheel and started veering out of the lane. It then turned into the opposite direction into traffic and eventually spun to a stop.

Buildup of rust on pad wearing surface. Complained about lack of brake performance since lease start.

On numerous occasions the automatic brake system engages the brakes with no warning. This dangerous and possibly deadly situation has been reported to the manufacturer and many authorized dealers.

See all problems of the 2004 Audi A4 🔎.

When I got the car in may. After a week, we went with friends out. When I braked the car began to move into the passenger front seat to the advance and inclines up to a maximum front of the dashboard. So in case of a car accident, he would have been dead. Audi dealer they did not believe me and thought I was misinformed. And it was not hard braking, but normal braking (slowing down). Because many times it happened to me out of the car started to brake without a reason to brake, when I tried to go around bikers at the safe distance, or when parking (until today). When I made the complaint in the Audi dealer, before, they told me that this is not possible, and laughed in June.

I have a 2005. 5 Audi A4 2. 0t quattro which has encountered a failure of the abs/esp electrical module. The result is failure of the esp system and the abs system. This is the result of a faulty electrical module which many forums describe as a frequent occurrence and as a result a redesign by the manufacturer. The Audi part is ~$1900. Based on the experience of many owners and the safety implications I would expect the manufacturer to cover the costs of correcting the defect.

See all problems of the 2005 Audi A4 🔎.

The brakes spontaneously engaged with no warning.

See all problems of the 2006 Audi A4 🔎.

As I approached a stop sign on the morning of Tuesday, February 18th I went to use the brakes and the pedal was extremely hard. It wouldn't press down at all. I ended up running through the stop sign and coasting in to a parking lot where I turned the car off and on a number of times and engaged the emergency brake. The brake was still hard every time. I called Audi experiences and by the time I had explained what happened the brakes began to work again. (for 15 minutes the brakes did not work!) I continued to drive the car that day but at a cautious speed. Later that evening, around 8:50pm, I was driving home and again, the brakes refused to work, same hard pedal as earlier that morning. I called Audi experiences and scheduled a tow pick up. Audi services says that a vacuum hose has been damaged and causes the hose to collapse on itself causing the brakes to "lock up. " they want to repair the same hose and use it again. It definitely needs replaced with a thicker hose that isn't going to collapse on itself and cause this to happen again. I believe this is a faulty hose and needs to be looked into. I have found a number of other people who have had the same issue happen to them. Luckily I was not hurt and didn't hurt someone else.

See all problems of the 2008 Audi A4 🔎.

The brakes spontaneously engage with no warning.

The anti lock brake control modulator unit failed, and now I have brakes that do not work. At the slightest pedal pressure, all 4 wheels will have a strong pulsating, giving you about 1/3 of the braking pressure that is needed. Volkswagens used a nearly identical part, and their abs controller is under recall, I do not understand why NHTSA, cannot force Audi of America to do the same. Thank you.

See all problems of the 1998 Audi A4 🔎.

1. When the abs is activated during snow or ice conditions. 2. The brakes "stick" and the abs is not fully deactivated once your foot is off the brake pedal. Often the rear driver side brake is still engaged slightly during driving. When stopped you can smell the rubbing brakes and you can tell the brake is rubbing while driving as it slows down the vehicle. It usually unsticks after several miles of driving or leaving the car sit overnight not running. 3. I've taken the vehicle to the dealer several times over the years, but they tell me that there is nothing wrong with the brakes or abs system.

See all problems of the 2000 Audi A4 🔎.

I was driving my Audi A4 2004 down a slight slope and had to stop at the red light just before crossing a major highway (va 123). As I saw the red light, I tried to press on the breaks and around the same time, I realized that the car started shaking as if it was about to stall. However, the car did not stall and the break was rock hard. I couldn't apply the breaks. I lowered the gear and used the hand break to stop the car. I had the car towed to the Audi dealer. Dealer told me that the suction pump valve split into two and that is why the engine suddenly got too much air and the break power assist also failed. They have replaced the suction pump. The old part has been trashed.

2001 Audi A4 2. 8 abs brake system controller failure.

See all problems of the 2001 Audi A4 🔎.

Abs electrical module that has failed and is apparently a huge problem, it affects the braking system.

Abs kicks in during low speed braking for no abs-related reason.

See all problems of the 1999 Audi A4 🔎.

The contact owns a 1999 Audi A4. The vehicle was repaired according to NHTSA campaign id number 99v131001 (service brakes, hydraulic:power assist:vacuum:hoses, lines/piping, and fittings). After the repair, the contact noticed that insufficient vacuum is provided to the brake booster in cold weather conditions. In addition, he noticed that the abs and brake warning indicators were illuminated on the instrument panel. The dealer stated that he was only entitled to one repair according to the recall law. The manufacturer did not assist. The failure mileage was 110,000 and current mileage was 113,000.

Been a not so proud owner of a Audi A4 2004 , and having a number of documents issues with my call and receiving poor service from my local dealer. At approximately 3000 miles before my warranty expired the front brakes starts to make grinding nose after taking to the dealer the dealer informed me that the brakes needed to be replaced including the routers (which by the way they never replaced under the maintenance despite the fact I requested them to check my brakes every time I took the car for service and they kept telling my the brakes were good). At this time they informed me that I had to pay $320. 00 to have my brakes replaced. What I don't understand is my did the dealer waited for the router to the full damaged before replacing them.

Premature abs (antilock braking system) module failure.