2025 Audi Q5 Driver Assist & ADAS Problems

I had adaptive cruise control on in moderately flowing traffic on the highway. Without warning the adaptive cruise control on it's own turned off/disengaged and slammed on the brakes. I had not changed lanes nor had anyone moved in front of me. The weather was clear. My safety and the safety of those behind me was put at risk. I've taken the vehicle to the dealer and they have not been able to reproduce the issue yet. They inspected the vehicle and took it for an initial 7 mile test drive, said they didn't find any problems and tried to return the car. There were no warning lamps or messages before or after the incident. I didn't notice any when it happened as I was focused on trying to avoid an accident. Prior to the incident the adaptive cruise control has turned off multiple times with the message " Adaptive cruise assist: currently not available" for no apparent reason, but this is the first time hard breaking was applied.

Regarding the adaptive cruise control, sometimes the system won't engage. The first time this happened a warning popped on the screen saying something about seatbelts. I've learned that the problem can be "fixed" by pulling off the road and turning the car completely off. That includes opening a door to silence the radio. The cruise has always worked afterwards. Sometimes while driving on cruise control, in a straight line, the car brakes abruptly for no apparent reason. Granted we were on the interstate and there was traffic but no reason whatsoever to brake. The cruise control is easily confused on roads with multiple lanes and sharp curves, like on [XXX] between Asheville, NC and Knoxville, TN. The car will brake abruptly, seemingly sensing a car in front of me but in a different lane. Sometimes when reengaging cruise control the speed goes not to the speed I had set but what it "sees" as the posted speed limit. This caused the car to speed up in a construction zone and slow to a speed below the prevailing speed of traffic around us. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The lane keeping assistance system was engaged as we were traveling at approximately 55 mph and started around a right hand curve. The system aggressively jerked the car to the left and with the wheels on the rumble strip associated with the center double yellow lines. There was traffic flowing the opposite direction and we would have been head to head with an oncoming truck had the driver not stopped the car. The car has been to the dealer, they can not reproduce any issues with the system and have asked that video be taken the next time this happens which is not feasible nor safe. I have not driven with the lane keeping assistance on since this incident, this was not the first time that I had issues with it trying to turn the car out of a lane, and I do not feel comfortable with it engaged any longer. There were no warning lights or messages.

The vehicle triggers the braking system when there is nothing in the road, this has happened when turning across traffic, into parking lots, and when just driving on a road. Luckily this has not caused a crash yet but it has a high likelihood of causing a crash if not properly fixed by Audi. Occasionally the sensors stop working and the seatbelts tighten aggressively. This is especially risky because my wife is pregnant and this tightens for no reason around the baby. This has happened many times in the short time I’ve owned this vehicle.

The ADAS is not working properly. Adaptive cruise control, emergency assist, lane departure, active front assist, distance warning, traffic sign recognition, adaptive light, etc. are all not working. The check engine light is illuminated, the key fob would not open car (not a battery issue) and the seat belt tensioner is not working properly. Those ADAS features are there for a reason and that is to enhance the safety of me, my passengers and other drivers. The key fob allows quick access to my vehicle, which enhances my safety when alone or with others. The seat belt tensioner provides restraint during an accident so neither I nor my passenger will go head first into the windshield, air bags and/or steering wheel/dashboard. The problems have been confirmed with the dealership. Yes, it has been inspected by the dealership. Yes, they first appeared January 2025. My car is currently at the dealership supposedly waiting for a backordered seat belt tensioner. It has been at the dealership for 22 days and I haven't any idea of when I will be getting the vehicle back. I purchased it in October 2025. It has been driven less than 5,000 miles.

I am reporting a recurring safety defect in my 2025 Audi Q5 (VIN: [XXX] ). The vehicle has been in the dealership for approximately 42 non-consecutive days for repeated malfunctions of multiple safety systems.While driving, the vehicle displays warnings and disables the following systems: SOS, Adaptive Cruise Assist, Active Front Assist/Distance Warning, Lane Change Warning, Proactive Occupant Protection, Traffic Sign Recognition, Adaptive Light, Emergency Assist, High-Beam Assistant, Lane Departure Warning, and Distance Warning. These systems intermittently fail and become unavailable, triggering dashboard alerts and warning messages.Despite multiple repair attempts, the same failures continue to reoccur. The dealership has acknowledged the issue and stated that a fix exists; however, they advised that the necessary repair parts or software will not be available for approximately 3–6 months. I was instructed to take the vehicle back and continue driving it until the fix becomes available.I am extremely concerned about operating a vehicle with known unresolved safety defects affecting numerous driver assistance and crash prevention systems. The repeated failure of these systems significantly impacts the safe operation, reliability, and value of the vehicle. I am requesting investigation into this matter and the delay in providing a timely repair. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The audi presense seems to be too sensitive and it is available for inspection. There have been 3 times that I've been at a complete stop in the middle of the intersection waiting for the opposing traffic to stop so I can turn left and suddenly the car brakes, seat belts engage and it scares us. 2 times I had just started to turn left and the car braked (no opposing traffic) and it was so sudden the car behind me almost hit me since they were not expecting me to suddenly brake as I was turning left. The car has been inspected by 2 different dealers and they can not reproduce the issue. No other warnings.