Audi Q5 loss of power problems

Filed Nov 8, 2026 · Engine · CA

The vehicle experienced a sudden and severe loss of engine power (limp mode) while driving, accompanied by a “POWER LIMIT” warning in the instrument cluster. Separately, the Advanced Driver Assistance Systems (ADAS) malfunctioned, including Emergency Assist / Medical Alert Assist (which autonomously pulled the vehicle over on two occasions) and Traffic Sign Recognition. The vehicle is available for inspection upon request. While accelerating at approximately 35 mph, the vehicle suddenly lost nearly all power and would only move at about 2 mph, creating an immediate hazard in traffic. On two separate occasions, the Emergency Assist / Medical Alert system pulled the car over without driver input. Traffic Sign Recognition also malfunctioned. These events nearly caused three accidents and have made the primary driver afraid to operate the vehicle due to the unpredictable loss of power and autonomous system interventions. The issues have been reported to the Audi dealer. We are awaiting formal confirmation and documentation of the findings. No police or insurance inspection has occurred at this time.” or “No formal manufacturer, police, or insurance inspection has been completed beyond dealer service visits. The instrument cluster displayed a “POWER LIMIT” warning during the power-loss event. Multiple ADAS warnings and system unavailability messages (including Emergency Assist and Traffic Sign Recognition) have appeared. The power-loss event occurred while driving at approximately 35 mph. The Emergency Assist pull-over events and traffic-sign malfunctions have occurred on multiple occasions since the vehicle was purchased in December 2025 (current mileage approximately 17,105).

Filed Nov 5, 2026 · Electrical, Transmission · NJ

The instrument cluster on my 2021 Audi Q5 failed completely — the display went black, with no speedometer or warning indicators. The failure occurred immediately after a car wash, and the vehicle then lost all electrical power. I had the vehicle towed to Audi Meadowlands on 10/26/26. On 10/29/26, the dealership replaced the battery and performed diagnostics ($972.78, RO# 76004260/1). The dealership diagnosed the failed instrument cluster and quoted $4,000-$4,500 to replace it, but did not repair it. The dealership then released the vehicle to me with the instrument cluster inoperative, after assuring me the vehicle was fine to drive. I drove the vehicle on public roads with no speedometer, no gauges, and no warning displays. Within 48 hours, after approximately two miles of driving, the vehicle lost all power again and would not operate. On 11/5/2026, the vehicle would not start. A first tow truck could not jump-start it; a second tow truck succeeded, and when I drove the vehicle out, reverse was not working properly. The vehicle was taken directly to Audi Englewood for independent diagnosis and is not safe to drive. I believe this involves two existing safety recalls. Safety Recall 90VC (the federal safety agency Recall 25V201) addresses failure of this vehicle's virtual cockpit instrument cluster, where warnings, tell-tales, and gauges that do not display could increase the risk of a crash. Safety Recall 90S9 (the federal safety agency Recall 21V947) addresses water penetrating the gateway control module on 2021 Q5 vehicles and causing it to shut down. My cluster failed immediately after a car wash and the vehicle then lost all power. The dealership has provided no documentation that the gateway control module was inspected, that any inspection for water intrusion was performed despite my numerous written requests. My concern is twofold: the defect itselfand the fact that an authorized Audi dealership knowingly released a vehicle with an inoperative instrument cluster into service on public roads.

Filed Sep 2, 2026 · Brakes, Driver assistance · NY

Severe consequential safety defect involving total anti-lock braking system (ABS) failure stemming from a manufacturer recall defect and volatile CAN-bus network conditions during repair. This vehicle has less than 7,500 miles and has been grounded at an authorized dealership, Audi Brooklyn- Lic# [XXX], 700 Hicks Street, Brooklyn, NY 11231, for exactly 20 days since being flatbed-towed on [XXX], due to total power failure caused by the known manufacturing defect of clogged sunroof drains flooding the critical interior electrical network. The dealership replaced the comfort control module under the VIN recall warranty. However, during the dealer's active programming phase of this recall component, a fatal communication fault was introduced to the J104 ABS safety module. My original Service Advisor documented explicitly in writing via text that the technician observed the ABS faults materialize specifically during the recall programming process. No prior warning signs other than the vehicle's sudden loss of power. The manufacturer's design defect allowed moisture ingress to destabilize the vehicle's localized CAN-bus communication network, leading directly to the catastrophic failure of a critical braking system (ABS). Dealership management is now attempting to evade safety liability and force an out-of-pocket repair payment by manipulating records. They have actively backdated internal "Ready for Pickup" dates for the vehicle from August 24 to September 1 to hide an 8-day window where they concealed a New York State safety inspection failure from me and attempted to release an illegal, uninspected vehicle with compromised brakes back to a vulnerable consumer. The owners of the vehicle are [XXX]. Furthermore, despite claiming the ABS module was a severe safety hazard, the facility logged 50 unauthorized miles (odometer jumped from 7,437 to 7,487) on public roads while it has been in their custody. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Aug 28, 2026 · Electrical · NY

Description of Incident and Safety Defect:Failed Component & Inspection Availability: The gateway control module, located in an unsealed floor compartment under the rear seat, failed due to liquid/moisture intrusion. The damaged module and vehicle are fully available for inspection upon request.Safety Risk: The sudden short-circuit of this module forced the vehicle into an immediate emergency "limp mode" and partial drivetrain shutdown while actively driving on the road. Unexpectedly losing engine power and throttle responsiveness in active traffic put my safety and the safety of surrounding drivers at an immediate, severe risk of a collision.Dealer / Independent Confirmation: The failure has been officially confirmed by an authorized Audi dealership service center. However, the dealer refused to perform a free safety repair because Audi has excluded my specific VIN from the active recall list.Prior Inspections: Outside of the diagnosing Audi dealership service center, the vehicle and failed component have not yet been inspected by the manufacturer, police, or insurance representatives.Warning Lamps & Prior Symptoms: Immediately prior to the drivetrain failure, the dashboard lit up with sudden error messages and warning lamps regarding a critical system malfunction. There were no gradual symptoms or warning signs leading up to this incident; the catastrophic module failure occurred suddenly due to moisture contacting the unsealed component.Summary Assessment:This vehicle has suffered the identical engineering defect and hazardous failure mode detailed in the federal safety agency Recall Campaign 21V‑947 (Audi Recall Code 90S9). Audi’s current recall window is too narrow. It must be expanded to include all 2018 Audi Q5 vehicles experiencing this exact, catastrophic safety failure, regardless of their production date cut-offs. To date the car has 89924 miles

Filed Aug 27, 2026 · Acceleration, Driver assistance · NJ

the federal safety agency Vehicle Safety Complaint – 2022 Audi Q5 I am reporting a potential safety defect involving water intrusion through the panoramic-roof drainage system of a 2022 Audi Q5 and resulting damage to the vehicle's electrical system. The vehicle was purchased with a rebuilt title at approximately 8,000 miles following minor dents/scratches and was fully operational. We drove approximately 23,000 additional miles without water-intrusion or electrical problems. Following heavy rainfall, water entered the vehicle and reached the comfort module, wiring and connectors, causing corrosion and extensive electrical damage. While driving, the vehicle began stalling and its lights/electronics started flashing. After we stopped, it would not start again. Audi estimated approximately $12,000 to repair the vehicle by replacing the comfort module/connectors and cutting and splicing the affected wiring harness to new connectors. Our insurer, Progressive, considers this a safety concern because the affected wiring harness connects with other vehicle systems and recommends replacement of the entire harness rather than splicing it. Audi TSB 2075969/2 addresses water intrusion in 2018–2023 Q5/SQ5 vehicles and states that panoramic-roof drain hoses may become kinked during headliner installation, blocking drainage and allowing water into the vehicle. Audi also issued Safety Recall 90S9/the federal safety agency 21V‑947 concerning liquid reaching the gateway control module in 2018–2022 Q5/SQ5 vehicles, recognizing that water-related electrical failure can cause reduced engine power and increase crash risk. Our vehicle experienced an electrical malfunction while driving after water intrusion. I request that the federal safety agency investigate whether this known Q5 panoramic-roof drainage defect presents a safety defect requiring recall action. The vehicle is preserved and available for inspection.

Filed Aug 18, 2026 · Electrical · NY

XXX My wife drive her 2018 audi q5 2.0 on express way with mother([XXX]),the car suddenly stall and lost all power ,because car bcm2 module has suffered liquid damage due to known vehicle design defect, towing to nearest repair shop change new bcm2 module and fix wire spend near $4000.00 dollars . INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jul 28, 2026 · Engine, Fuel system · FL

On July 23, 2026, my 2023 Audi Q5 suddenly lost power while I was driving on the highway, with no prior symptoms before the incident. The vehicle began stuttering, entered limp mode, displayed multiple drive-system malfunction warnings, and developed a loud knocking sound from the engine area. The loss of power created a serious safety risk because the vehicle could no longer accelerate or operate normally in traffic. I pulled over as soon as it was safe, shut the vehicle off, and had it towed. The vehicle had approximately 74,945 miles at the time of the incident. An independent auto repair shop performed a diagnostic inspection and documented fault codes P030300 for a cylinder 3 misfire, P130A00 indicating cylinder 3 fuel injection had been disabled to protect the catalytic converter, and P013B00 involving the rear oxygen sensor. The technician reported severe connecting-rod knock from inside the engine block and found a large amount of metallic debris in the engine oil. The shop concluded that the engine had suffered catastrophic internal failure and required replacement. The symptoms and findings closely resemble the connecting-rod failure condition described in Audi recall 13i5 / the federal safety agency recall 22V753, although Audi advised that my VIN is not currently included. The vehicle is now at an authorized Audi dealership for further diagnosis. I am reporting this because the sudden loss of power and internal engine failure occurred while the vehicle was being driven and could have resulted in a crash. I request that the federal safety agency review whether my vehicle experienced the same or a substantially similar connecting-rod failure as the 2023 vehicles covered by recall 22V753, despite my VIN not currently being included.

Filed Apr 16, 2026 · Steering · NJ

Title - Sudden Loss of Steering Control While Driving – 2018 Audi Q5 (Aug 2024) While driving my 2018 Audi Q5 at normal road speeds, the vehicle experienced a sudden and complete loss of power steering assist. A dashboard alert stating “Power Steering Malfunction” appeared simultaneously with an immediate and severe increase in steering effort, making the steering wheel extremely difficult to turn and effectively resulting in a loss of steering control. This incident occurred on a public roadway while I was transporting my family, including two young children (ages [XXX] and [XXX] ). The uncommanded loss of steering assist created an immediate and serious safety hazard and could have resulted in a crash, serious injuries, or fatalities to vehicle occupants and others on the road. I was able to bring the vehicle to a stop and subsequently to the dealership, only with significant effort and risk. There were no prior warning lamps, noises, reduced steering assist, or other symptoms before the failure. The malfunction was abrupt and occurred without any advance indication. The vehicle had approximately 39,000 miles at the time, which is well below what would reasonably be expected for a power steering rack failure. The vehicle was not modified or abused and was driven under normal conditions. Audi dealership confirmed failure of the electric power steering system and diagnosed the issue as a power steering rack failure requiring full replacement. The repair was completed only after the vehicle became unsafe to operate. The removed component may be available through the servicing dealer or Audi of America for inspection upon request, and I have retained all repair documentation. Audi of America was notified of this incident after the repair but declined responsibility. Based on subsequent research, I am aware of multiple similar reports involving Audi Q5 power steering failures. I am submitting to assist the federal safety agency in determining whether this issue poses a broader risk. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF I

Filed Mar 21, 2026 · Engine · CA

I am filing a safety complaint regarding a progressive engine defect. Beginning as early as 2019 (approximately 84,000 miles), I repeatedly reported excessive oil consumption and related engine concerns to authorized Audi dealerships. These complaints continued over several years. At no point was I informed that these symptoms could be associated with a known defect pattern or progressive engine failure. The condition has now escalated to a severe engine malfunction. The vehicle began exhibiting engine misfires, flashing check engine light, EPC warning, and unstable operation. The dealership confirmed misfire fault codes and oil contamination affecting the ignition system. Engine replacement was initially recommended. Excessive oil consumption leading to internal contamination and misfires presents a significant safety hazard. Loss of engine power or sudden failure while driving can create dangerous conditions, particularly at highway speeds or in traffic. Despite the long history of reported symptoms, Audi of America has declined to provide assistance, citing only warranty status and failing to address the defect progression. The vehicle has now been inoperable at an Audi dealership for approximately 60 days (nearly two months), with no resolution. This situation raises concerns regarding a safety-related defect, failure to disclose a known issue, and a potential broader pattern affecting similar vehicles equipped with this engine. I am requesting that this issue be reviewed for potential defect investigation. The dealer provided diagnostic findings with Failure Codes via a temporary link that is no longer accessible. I am requesting a copy of the full report and will upload this (once received), along with other documentation.

Filed Mar 11, 2026 · Fuel system, Transmission · GA

After the automatic start/stop system engages, the engine stalls and completely shuts off shortly after the vehicle begins moving again. This occurs after the vehicle restarts and travels only a few feet. When the stall happens, the vehicle loses power and the engine stops functioning while the car is in traffic. This has occurred two separate times: once on a busy highway and once while entering a roundabout. Both incidents created a dangerous situation where the vehicle could not maintain power in active traffic and could have resulted in a crash. A yellow emissions warning light also appeared on the dashboard. The dealer indicated that an intermittent oil pressure sensor code was present but no parts were replaced and no corrective action was taken. The dealer reset the system and stated they could not reproduce the problem. The vehicle is now being returned to me without repair despite the safety risk. An engine stall immediately after the start/stop system restarts the vehicle creates a serious hazard because the vehicle can lose power in the middle of traffic. I believe this issue may be related to the automatic start/stop system or an oil pressure sensor fault affecting engine operation.