Audi Q5 brake failure problems

Filed Jun 29, 2026 · Brakes, Driver assistance · MT

CORRECTION to the federal safety agency COMPLAINT #11745968 The Electronic Parking Brake (EPB) did not disengage when the vehicle was placed in gear from P to R to D while/after parked in an incline postion (see DTCs -Bozeman Audi invoice, 6/23/26). The EPB is designed to disengage automatically. There was a dashboard warning light --RED--symbol--brake failure that flashed when the ignition was started. The occupants drove the vehicle approx 50 ft before the vehicle's Automatic EBS and/or Automatic Parking Braking (Maneuver Assist) shut down the vehicle completely because EPB was still engaged after gear shifts--R and D. |DTC| Diag 01500060-15TU (202729223) Terminal 75X (Relief Relay for X-Contact). [DTC 01500 / 015000] Diagnostic Lookup [Root Causes]: Blown Fuse: A fuse (typically on the main power distribution block) protecting the relief relay circuit has failed. Faulty Relay: The J59 X-Contact Relief Relay has mechanically stuck open or failed internally. Wiring/Ground Fault: Corroded, pinched, or damaged wires along the steering column or under the dashboard. Low Battery Voltage: Insufficient system voltage can trigger relay dropout during vehicle start-up. [Immediate Next Steps] Check Voltage: This was not done at Bozeman Audi dealership [DTC] The Audi repair sequence "27068950" Battery Charging / Testing (Labour Operation Number: 27068950) associated with the 12V/48V electrical system on an Audi. Audi Automatic Braking System—Audi pre sense®—includes Automatic Emergency Braking (AEB). Automatic Parking Braking (Park Assist / Maneuver Assist): This operates when parking or reversing. "In the 2023 Audi Q5, the Electronic Parking Brake (EPB)—the physical switch marked with a (P) on your center console—acts as the ultimate mechanical failsafe and anchor. It interacts differently with the Automatic Emergency Braking (AEB) and Automatic Parking Braking (Maneuver Assist) systems based on speed, safety protocols, and driver behavior." Safety Recall 93AA

Filed Jun 23, 2026 · Brakes, Driver assistance · MT

Automatic Emergency Braking system engaged when the vehicle was parked on an incline. Unable to release automatic emergency brake when vehicle was started with key. Ignition light warning — RED — symbol — brake failure. Required a tow to Audi dealership. Audi dealership in two states failed to use OMB II reader to scan codes at the time of emergency visit. Vehicle was released to owner without scanning codes at the time of the emergency therefore owner acquired more than 3-4 consecutive drive cycles before scheduled repair appointment 7 days after emergency incident described above because the Audi dealerships in two states (vehicle occupants were traveling long distance) failed to read and store computer codes immediately after emergency incident with the automatic braking system. This incident made the vehicle inoperable and placed the occupants of the vehicle in an unsafe situation. The failure at the Audi dealerships to retrieve codes at the time of the emergency incident prolonged a permanent repair and will make vehicle evaluation/assessment for safety less reliable given that no evaluation or assessment was done at the time of the emergency at the dealerships and before the vehicle codes were automatically cleared after 3-4 consecutive ‘drive cycles.’ Requested an incline field test with vehicle — place the vehicle in similar conditions— incline — and test automatic emergency braking system— during scheduled appointment 7 days after incident.

Filed Dec 29, 2025 · Brakes · NY

On 12/13/25 around 8:00am in the morning. I was driving between 20-25 MPH and started to brake for the corner stop sign. I applied the break as I normally would however, the car continued to roll and did not respond to my applying pressure to the brake pedal. No matter how much pressure I apply to the brake the car continued to coast without stopping. I continued to press hard on the break and even pumped the break. After 2 to 3 yards of coasting, the car stopped. I continued to drive the car for another 0.5 miles and the same break problem occurred again. There are no lights indicating problems on my dashboard. The weather was clear and sunny in the morning. There was no rain. There was no snow. All the roads were dry. I took the car to my dealership and they could not find anything wrong. The brake pads were well within the normal safety range at 8 mm. There was no computer system malfunction. They could not give me an explanation. The Audi dealership’s head mechanic said that because my front brake pads and rotor, and my back brake pads were replaced at Pep Boys two years ago that this could be a reason for the brake failure. although he was not 100% sure of this. He suggested that I pay $3500 for Audi to replace the current rotors and brake pads despite the original determination that there were nothing wrong with them. The auto mechanic test drove the car with me after the diagnostic evaluation. He could not detect any problems with the brakes no screeching sounds no noises. The anti brake system was working well. to this day, I still do not feel safe driving this car for fear that the incident with the brake failure will happen again.

Filed Nov 29, 2025 · Brakes, Electrical · SC

Two weeks after purchase, experienced multiple, random driver assistance failures. After attempting to repair issue once unsuccessfully, The dealership was unable to provide a second service appointment for two and a half months. Was explained all 2025 Audis were having issues, so couldn’t get car in any sooner. Before that second scheduled service appointment and while driving in traffic, the brakes failed.

Filed Jun 4, 2024 · Brakes, Engine · PA · crash · 1 injury

Reverse car went full throttle, brakes did not work, car stopped in reverse when it hit a tree. Seat belt did not tighten,

Filed Nov 15, 2023 · Brakes · SC

Complete hydraulic brake failure while on an interstate going 75mph. No warning, just sudden loss of regular and emergency brakes. I was able to cross 4 lanes of traffic to get to the shoulder where I waited absolutely terrified of being rear-ended for the two hours it took for a tow truck to arrive. My repair place was shocked at the problem, considering the car was 8 years old with low mileage. They found the only after-market part in the entire country and repaired it for under $2000 when they initially thought it would be $6000.

Filed Jul 5, 2023 · Brakes, Electrical · NY · crash · 2 injuries

My wife and I were in the 2023 Audi Q5 with 1000 miles. I had complained to the dealer and manufacturer that this car was unsafe to drive. On June 9, 2023 I was driving slowly in my community. I tried to stop at a stop sign. NO brakes then at the same time the car had unintended sudden acceleration. We had no control, no brakes and hit a fence and shrubbery and cement fence. All airbags deployed.

Filed Dec 4, 2021 · Brakes, Steering · NY · crash · 1 injury

I was driving down a slight hill in 1/2 inch of snow at 5MPH and when I tired to gently brake as I descended the hill, the brake pedal had no resistance and went flat to the floor. I had no brakes. I then tried to steer towards the side of the road and the steering wheel completely locked up and I was not able to steer. I slid 150 feet down the hill and into a ditch. No brakes and no steering. There must have been a failure of some kind. Terrifying.

Filed Sep 11, 2021 · Electrical · TX

The 2021Audi Q5 has a gateway module under the middle back seat. Any fluid that contacts this module will cause it to fail shutting the car down completely. In addition, immediately above the module are 2 drink car holders. It only takes a small amount of spilled drink to cause this to happen. This happened to me on Sept. 7 causing my car to come to a complete stop immediately after passing thru and intersection. Eventually this will get someone killed on seriously injured. Audi has been aware of this issue but they don't inform potential buyers. This has happened numerous times before and I have attached other incidents posted on the internet. Please take action to make Audi take responsibility and corrective action. Electrical System problem #1 On August 19th, we drove our Audi through heavy rain early in the day on interstate 90 to go to mass general hospital. It was then parked in their covered parking garage. When we went to return home, we were on the entrance ramp to I 90 east and suddenly the car displayed messages of brake failure, electrical failure, steering failure, and then it died. It could not even be put in park. I was able to coast to the narrow shoulder. It was towed to brookline Audi. We are told by the service technician that the gateway module in the vehicle got wet and it is our responsibility as we drove through water. Although we certainly drove in pouring rain, we never drove through any flooded areas. The apparent fact that water somehow got into this new car and shorted out this all important device is terrifying. Electrical System problem #2 Driver was with 2 passengers (3 young females) driving in a new 2021 Audi Q5 (less than 5 months old and less than 6000 miles) at about 70 mph on garden state parkway in NJ. A brake malfunction warning light appeared on the dashboard and within 5 seconds the car completely shut down in the middle lane of the parkway (in a black car at 10pm). This was the first notification or warning--nothin

Filed Aug 23, 2021 · Electrical · NY

On August 19th, we drove our Audi through heavy rain early in the day on Interstate 90 to go to Mass General Hospital. It was then parked in their covered parking garage. When we went to return home, we were on the entrance ramp to I 90 East and suddenly the car displayed messages of brake failure, electrical failure, steering failure, and then it died. It could not even be put in park. I was able to coast to the narrow shoulder. It was towed to Brookline Audi. We are told by the Service Technician that the Gateway Module in the vehicle got wet and it is our responsibility as we drove through water. Although we certainly drove in pouring rain, we never drove through any flooded areas. The apparent fact that water somehow got into this new car and shorted out this all important device is terrifying.