2022 Audi e-tron S Electrical System Problems

After dealership service and recall-related calibration work, my vehicle developed multiple safety-related issues that did not exist prior to service. The dealership documented a diagnostic trouble code for “Hybrid/EV Battery Thermal Runaway Detected” (P29FF00), a critical high-voltage battery safety fault. Instead of diagnosing and repairing the root cause, the dealership cleared the fault code and returned the vehicle to me, stating it was operating as designed. Following this, the vehicle has exhibited abnormal and unsafe behavior, including significant and inconsistent loss of driving range, irregular energy consumption, regenerative braking issues, and braking concerns such as squealing, mechanical drag, and rotor heat buildup affecting stopping performance. Additionally, multiple control modules associated with the recall and calibration work are affected, including systems related to driver assistance and vehicle operation. These systems required recalibration, and the vehicle’s behavior changed following this process, raising concerns about improper calibration of safety-critical systems such as lane keeping and stability functions. The dealership’s documentation confirms fault codes were erased without confirmed repair or root cause resolution. No clear diagnostic explanation was provided for the battery fault or related system issues. Audi of America has been notified and has refused further escalation or assistance, directing all responsibility back to the dealership despite unresolved safety concerns. I am concerned the vehicle is operating with unresolved high-voltage battery and system faults that pose a serious safety risk, including potential battery failure, loss of braking performance, and malfunctioning driver assistance systems

A vehicle was taken to a collision repair facility following minor front-end damage. At intake, the repair facility documented visible exterior damage but did not perform or document an underbody inspection, which is necessary to assess high-voltage battery integrity in electric vehicles. After the vehicle entered teardown, the repair facility later claimed that the high-voltage battery was damaged and recommended that the vehicle be declared a total loss. This determination was made without documented evidence of required OEM diagnostic procedures and without initial intake documentation supporting battery damage. The sequence and timing of documentation raises concern that the battery damage determination was made after teardown rather than through proper inspection protocols. A subsequent manufacturer-level evaluation did not support the claim of battery damage. This situation presents a safety concern regarding whether proper high-voltage battery inspection and handling procedures are being followed by collision repair facilities. Misidentifying or improperly handling high-voltage battery conditions in electric vehicles can pose safety risks, including potential thermal events, improper classification of vehicle safety, or unsafe return to service. This complaint is submitted to request review of whether proper safety and OEM procedures were followed in evaluating the high-voltage battery, and whether this reflects a broader safety issue in electric vehicle collision repair practices.

1.Perfect vehicle before 93V2 recall - No issues with regenerative braking or battery before recall 2.93V2 recall applied August 19, 2025 at Audi McKinney (Note: Audi had initially failed to apply the recall at my May 23, 2025 scheduled appointment, choosing instead to “enable remote monitoring”) 3.Complete regenerative braking failure within 3 days of recall - [XXX] 4.Battery thermal runaway faults documented - P29FF00 and P29FF01 codes (the exact fire risk the recall was supposed to prevent) 5.Four failed repair attempts over 54+ days: •Aug 19, 2025: 93V2 recall applied •[XXX]: First failure, P29FF00 fault, faults cleared •[XXX]: Second failure after 18-day service, P29FF01 fault •[XXX]: Third failure (only 5 days after promised “fix”) •Currently ongoing: Fourth repair attempt 6.Audi cannot fix the defect - Technicians confirmed they only clear codes and perform “basic settings,” no actual repair 7.False promises from management - Service Directors Davis Adame and Michael Bush personally promised vehicle was “completely fixed” and tested for “couple of days” - failed 5 days later 8.Vehicle described as unsafe - Technician confirmed regenerative braking “does not work,” vehicle randomly fails to start with “System malfunction” errors INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The AEB system engages periodically with any obstacles while at a high speed. Suffered whiplash and anxiety as problems occurs without warning. Vehicle is available for inspection. Unprovoked Braking at high speeds on highway can be dangerous. Dealer has not responded to complaints of the issue on 2-3 service appointments. Dealer states there are no codes and no follow up was given. No previous errors notes vehicle was bought new and we are first owners.

The battery malfunctioned and discharged rapidly while it was being shipped in a covered tow truck overnight (moving). The manual resets do not work, and it is very difficult to tow. The battery charge port manual release does not work as advertised in the instruction manual. Directions and labeling are not clear on the manual release. The car completely shuts down and cannot even move it into manual mode to push it. Have made numerous service appointments as it can lose 20-30% charge without even driving. The estimates for mileage are wrong too. The car is advertised as 220. After having driven the car about 12,000 miles, the true range is 180 at best on a full charge.

The contact owns a 2022 Audi E-Tron S. The contact received notification of NHTSA Campaign Number: 23V867000 (Electrical System) however, the part to do the recall repair was not yet available. The local dealer was contacted and confirmed that parts to do the recall repair were not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

Complete electrical system had a complete and unintended shut down making the vehicle totally inoperable for minute 15 seconds until electric (EV) power to the vehicle was restored. Occurred at a red light stop, if the power had failed while I was driving my 2022 Audi eTRON EV on Almaden Expressway, San JOse, CA would have had the potential to be catastrophic. Received a warning on the dashboard approximately 30 seconds prior to the unintended power failure to the vehicle indicating' "Malfunction of Driver Assistance". Vehicle also had experienced numerous false warning of traveling in the wrong direction on a one way road. This was incorrect as the warning indicated a street I was not driving on, that is approx. 85 miles away. This has happened approximately 4x prior to the unintended power disruption incident.