2016 Audi A3 problems

“My 2016 Audi A3 (VIN [XXX]) underwent Safety Recall 69BY on XXX, to correct a defect in the front passenger occupant detection system (PODS), including replacement of the occupant detection sensor. Less than two years later, the same safety-system malfunction returned. The vehicle intermittently displays "Safety system: system fault," "Audi pre sense: system fault," and "Passenger airbag off." These warnings appear unpredictably and sometimes clear temporarily before returning. This malfunction creates a serious safety risk because the vehicle may fail to recognize a front-seat passenger and disable the passenger airbag during a collision. We cannot safely use the front passenger seat. On XXX, at 74,151 miles, Audi Marin diagnosed the malfunction and documented fault codes B102202, B102229, and B12251B. The dealership confirmed that diagnostic testing continued to indicate a faulty passenger occupant sensor (G128) and recommended replacement. Audi Marin's service manager informed us that Audi has redesigned the replacement component, but the updated part is on an extended backorder from [XXX]. The dealership cannot currently complete the repair. Audi of America…”

“My 2016 Audi A3 Sportsback E-tron vehicle was parked at my house. When I went to start it the engine did nothing, no power. The message “Driver System Fault” and a red triangle with a red ! in the middle was displayed on the instrument panel. I was unable to start or operate the vehicle. I called AAA and they towed the vehicle to a Recharge Hybrid pump location near my house. I tired to charge the battery and it would just turn off. Then I called AAA again and they towed my car back to my house and checked the small 12 volt battery to see if that was the problem, they determined that the 12 volt battery still had 75% life in it. They were unable to get my vehicle started. The same message is still on the dashboard “Driver System Fault." The failure mileage is approximately 81,567. I want to know before I call the Dealer and get it towed again if this issue is the Hybrid High-Voltage Battery or the housing bonded seam could have lead to corrosion the service recall from a while ago. Service Action Code 93D2”

“FUEL LEAKED ALL MY GARAGE ALMOST CAUSING A FIRE IN MY HOME WHILE I WAS SLEEPING. I HAVE HAD THE FUEL TANK REPLACED 3 TIMES. AND I HAD TO PAY OUT OF POCKET TO HAVE IT REPLACED BECAUSE AUDI WOULD NOT REPLACE THE RECALL OF IT SO I AM REACHING OUT TO YOU SO YOU CAN REACH OUT TO AUDI ABOUT NOT STANDING BY THE RECALL PROCEDURE!”

“The contact owns a 2016 Audi A3. The contact stated while driving at an undisclosed speed, the vehicle stalled with the check engine and low oil warning lights illuminated. The contact also became aware that there was fuel leaking from the charcoal canister. The vehicle was restarted; however, the failure recurred. The vehicle was taken to the dealer and was diagnosed and determined that the evaporative emissions and charcoal canister needed to be replaced. The contact was informed that the fuel tank needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was unavailable.”

“The **mechatronic unit** (integrated into the S-Tronic dual-clutch transmission) is the primary component that fails. This unit controls gear shifts, clutch engagement, and hydraulic pressure within the transmission. Common failure points include: - Internal electronic control module (ECU) faults. - Malfunctioning solenoids or pressure valves. - Software glitches or calibration errors. **2. Safety Risks** Mechatronic failure poses significant safety risks: - **Erratic Gear Shifts**: Sudden jerks, delayed engagement, or refusal to shift gears could lead to loss of vehicle control, especially in traffic or during overtaking . - **Limp Mode**: The transmission may default to a single gear (e.g., 3rd gear), severely limiting acceleration and braking responsiveness . - **Complete Gear Loss**: Loss of reverse or multiple forward gears increases collision risks during parking or low-speed maneuvers . --- **3. Confirmation by Dealers/Service Centers** Dealers and independent specialists can reproduce and confirm the issue through: - **Diagnostic Scans**: Fault codes like "implausible gear ratio," "valve electrical faults," or "clutch adaptation limits" often indicate…”

“The contact owns a 2016 Audi A3. The contact stated that while the vehicle was parked, there was a strong fuel odor coming from the vehicle, and the vehicle hesitated while starting. Additionally, the contact stated that the failure persisted before starting. The vehicle was driven to an independent mechanic where it was diagnosed that there was an engine misfire and a leak in the fuel pump. The vehicle was not repaired. The VIN was not included in NHTSA Campaign Number: 16V647000 (FUEL SYSTEM, GASOLINE, ENGINE AND ENGINE COOLING). The manufacturer was not notified of the failure. The approximate failure mileage was 92,000.”