Electrical System Problems of Audi Q5 - part 1

Multiple electrical failures that control numerous safety systems, such as airbags, collision avoidance, speed control, etc. Airbags will not activate in a collision. Vehicle will shut off at highway speeds, resulting in loss of steering control. The vehicle has been inspected by an Audi dealer. Multiple warnings on dash came on when the issue occurred.

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Incident description: while accelerating from a red light during rush hour, the vehicle suffered a sudden, catastrophic loss of steering control. The steering wheel locked completely and could not be turned. Simultaneous loud, long beeping and dashboard warnings appeared, stating: "steering malfunction stop the vehicle immediately. " the vehicle was immobilized in the middle of a highly congested, complex 5x5 intersection. Local police had to shut down traffic until the vehicle could be cleared. Safety risk: stalling abruptly in a major intersection during rush hour created an immediate risk of a multi-car rear-end pile-up. This jeopardized the safety of the driver and multiple children who were inside the vehicle, who faced a severe personal injury risk whether they remained trapped in the active roadway or attempted to exit. Diagnosis, cost, and recall context: the vehicle was towed to an authorized dealership. Diagnosis revealed significant water intrusion inside the steering wheel wiring harness. Draining the water cleared the error and the vehicle become operational, but the dealership quoted $6,000 in repairs to replace the steering components completely out-of-pocket cost. Please note it appears the $6,000 quote will be out-of-pocket for catastrophic safety defects although they may be known issues for the same make and model years: prior gateway recall: this vehicle’s VIN was previously impacted by the gateway module recall (where water intrusion triggers a limp mode). That recall was redeemed prior to this event, and my understanding the repair should have prevented moisture intrusion. There seems to be a history on this make and model for known moisture intrusion causes critical issues. U45 warranty exclusion: the manufacturer issued a warranty extension for this exact steering failure on this same make and model years. However, this specific VIN was excluded from coverage, despite it being within the parameters.

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 NHTSA 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.

I have a 2018 Audi Q5, VIN [xxx]. I am reporting a water intrusion/electrical defect involving the rear trunk area and the comfort control module. My vehicle is within the model range affected by the water-intrusion recall 90s9. I want Audi to investigate whether the water intrusion that damaged my vehicle is related to the recall or a known manufacturing defect, and I am requesting that Audi cover the inspection, repair, and related expenses. It is unsafe driving the car as it is, and I can't afford the repairs. Audi dealer-hip in alentown PA diagnosis the car and found the problem. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

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).

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Engine start malfunction warning light. Apparently, this has been a problem with the 2020 Q5 (and others) from water backing up from clogged moonroof drainage system allowing water into the l rear compartment housing the comfort control module, wiring, fuses, etc. (or other roof drainage problems also saturating the ccm) dealership has determined that damage to the ccm and corroded wiring will cost about $5500 to replace and program. Audi, I believe. Sustained a class action lawsuit and agreed to cover that problem with the moonroof drainage system up to 90000 miles. However, my vehicle is at 114000, but I never received any type of notice of there being a problem or that the drainage system should be evaluated from Audi. And this had to have been occurring for years for system corrosion and failure. This apparently can cause the vehicle to freeze in the middle of driving, which is a significant risk, as well as other problems of inability to access vehicle and multiple other warning lights. The warranty for this problem should be extended to cover damages incurred from the poor drainage system design and improper notification of such by Audi.

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On 8/3/26, my 2021 Audi Q5 began throwing numerous different malfunction/error alerts and the engine turned off while driving after a bottle of water had partially spilled onto our backseat behind the drivers side. The vehicle was towed to a nearby mechanic who determined that liquid damaged the gateway control module located under the backseat of the vehicle, as the gateway control module is placed in a "protective cover" (an unsealed plastic bag) and that bag visibly had liquid inside of it. We had immediately contacted Audi upon learning of this issue and decided not to move forward with any repairs, but to instead pay out of pocket to have it towed 70 miles to Audi/where we originally purchased the vehicle. This "protective cover" the control module was placed inside was completed as a recall service repair on our vehicle in April of 2022 due to a NHTSA recall announced in December 2021 regarding safety issues in these control modules failing from liquid spills on the backseat. We contacted Audi, explained that liquid had spilled in our backseat and entered the "protective cover" and damaged the control module. They agreed to inspect our vehicle to determine if the "protective cover" had been insufficiently installed. We paid out of pocket to have it towed to the dealership where it took them 6 days to determine the gateway control module is damaged (we had already explained this to them). Although liquid was found in the "protective cover" of this gateway control module, the dealership claims it was installed sufficiently. Upon looking into this matter further, there are numerous complaints of this exact issue (water entering and damaging the gateway control module from a liquid spill on the backseat, even with the "protective cover") on the NHTSA website, as well as a previous class action lawsuit settled out of court in regards to this exact issue. The prior recall repair does not fix the safety hazard as stated in the official NHTSA recall report.

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While driving my 2026 Audi Q5, the instrument cluster display went completely black twice while the vehicle was in motion, eliminating my speedometer and all warning indicators. Separately, during another drive, the vehicle displayed "suspension: malfunction! safely stop vehicle" on two occasions within minutes of each other, at approximately 15 mph and 17 mph, each accompanied by illuminated abs and brake warning lights. Immediately after, the odometer failed, displaying dashes instead of mileage, and the display spontaneously switched from miles to kilometers. This was followed by approximately 15 additional system warnings disabling adaptive cruise assist, lane departure warning, exit warning, active front assist/distance warning, parking systems, fatigue warning, traffic sign recognition, distraction warning, rear cross-traffic assist, and emergency assist. The vehicle was taken to an authorized Audi dealer for diagnosis. The technician was unable to duplicate or identify the cause of the failure. I have photographic documentation, with timestamps, of every warning message described above. This appears to be an intermittent failure of a central vehicle module or communication bus affecting braking, stability, and driver-assist systems simultaneously, creating a safety risk while driving.

Nhtsa 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/NHTSA 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 NHTSA investigate whether this known Q5 panoramic-roof drainage defect presents a safety defect requiring recall action. The vehicle is preserved and available for inspection.

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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).

My 2018 Audi Q5 experienced significant water intrusion due to a failure of the panoramic sunroof drain system. Water entered the vehicle interior and traveled down into the electrical compartment, submerging the comfort module and damaging multiple wiring harnesses. This caused the vehicle to become inoperable and unable to start. Audi has issued technical service bulletin 2075969/2 describing this exact defect. The bulletin states that the sunroof drain hoses can be kinked during factory installation of the headliner, which blocks drainage and causes water to enter the vehicle. This is a manufacturing defect affecting multiple model years of the Audi Q5. In my case, the water intrusion caused electrical failure, loss of vehicle function, and required thousands of dollars in repairs. Audi declined to cover the defect and stated the vehicle was not maintained on schedule, even though maintenance has no relationship to kinked or improperly routed sunroof drains. This defect poses a safety risk because water intrusion into electrical components can cause sudden vehicle failure, electrical shorts, corrosion, and loss of critical systems. The failure occurred without warning. I am reporting this because the issue appears to be widespread, documented by Audi, and has the potential to disable vehicles unexpectedly.

I wrote Audi to request escalation of an unresolved issue involving my 2018 Audi Q5, related to safety recall 90s9 (NHTSA campaign 21v947000) for the gateway control module. Summary of the issue: my vehicle recently experienced a complete gateway control module failure due to water intrusion. I lost steering and brake assist warnings while driving, and the vehicle would not restart after being pulled over safely. It was towed first to the nearest Audi mechanic who diagnosed the issue as recall 90s9. We then contacted Audi memphis for inspection by them since it was a recall issues and paid a 2nd towing charge. Audi memphis (owned by gossett motor cars) said they could not do anything until they looked at the car. I have since obtained a copy of the original repair order from when recall 90s9 was performed on my vehicle. The vehicle at the time of recall repair was owned by my mother. The recall requires two remedies: (1) installation of a protective cover over the gateway control module, and (2) sealing of an underbody seam on vehicles produced before September 2021. The repair order shows a technician comment reading "insf" next to the seam sealant line item, which indicates the sealant application was noted as insufficient at the time of the original recall service. Despite this documentation, and despite towing my vehicle in specifically for a 2nd inspection, Audi memphis has stated they have no findings and no liability for the current failure. Given that: • my vehicle is included in the affected range for recall 90s9, • the original repair order appears to document an incomplete or insufficient sealant application, and • Audi's own 90s9 technical bulletin states that damages resulting from improper repair or failure to follow the work instructions are the dealer's responsibility, I am requesting that this case be escalated for review. The current gateway control module repair be repaired at no cost to me. I currently have no working vehicle.

If I have a sensor that will malfunction due to water then there should be a water indicator alert. My sunroof vent was blocked and water went into my trunk where the core module is. I had just come to a red light to turn on to a major highway and my car began to smell like fuel. I rolled down the windows and realized the smell was not as strong as inside. The light turned green and as I stepped on the gas the car went into limp mode as I was in the middle of my turn. The power steering then went out in the turn and the wheel yanked to the left and put me half way into the lane next to me. Thankfully no one was there. I had to yank it back to the right to get off of the highway on to the side of the road. I do not think that the power steering should be associated with that module or at least a water indicator sensor should be added. What happens if someone is on the interstate is driving 75 mph and their power steering goes out. It's in the shop and there is no damage other than now I am scared to drive it.

Correction to NHTSA 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.

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The dashboard displayed a solid red brake light with a flashing warning “stop vehicle safely” light. A professional diagnostic scan confirmed a permanent hard fault on the abs control module (j104) and hydraulic unit (n55). The vehicle has only 66,755 miles. Independent repair shops cannot service this unit because it requires highly restricted, specialized Audi factory programming and coding software, forcing consumers to face massive dealership replacement costs for a premature electronic failure ona critical safety system.

Electrical system failure due to water in the spare tire & battery well, purchased key fob, 2 auto batteries unable to program fob due to non compatible 1st battery, info display contact dealer, had the water extracted, there were no prior indicators of an upcoming issue until the morning of may 22,2026 when my vehicle wouldn't start so I called roadside assistance for a boost. The key symbol is constant on display now, after over 2mos @the dealer, made several calls to Audi corp, Audi. Com, Audi USA. , consumer protection, texas lemon law , it was shown to have an active recall. I was advised to contact my insurance company, which was denied seems as though no resolve for an actual ongoing Audi issue. I'd hate to be driving & the vehicle comes to an abrupt stop & put lives in danger from a known ongoing recall issue by Audi. Thanks in advance for your attention to this matter. Regards,.

On may 21, 2026, at approximately 5:00 pm, my 2025 Audi Q5 (VIN: wa12aagu0s2040827) initiated an unprovoked forward collision warning and emergency braking intervention while I was traveling at approximately 57–58 mph on charlton road in charlton, NY. Road conditions were clear and dry. Weather was sunny. Adaptive cruise control was not activated. I was the sole occupant of the vehicle. A vehicle was making a lawful turn onto the roadway from a t-intersection. There was substantial distance between my vehicle and the turning vehicle. No collision risk existed and no evasive action was required. Despite this, the vehicle's forward collision system overrode my control and initiated emergency braking without cause. As a result of the sudden braking and the force of the seatbelt restraint during the event, I sustained abdominal pain and lower back pain that began immediately following the incident and persisted thereafter. This incident did not occur in isolation. Prior to this event, the vehicle had already exhibited a documented pattern of electronic and driver assistance system malfunctions, including intermittent check engine warnings, repeated false-positive driver assistance alerts, power liftgate malfunctions, sunroof malfunctions, and additional electronic irregularities. All of these concerns were reported to Audi albany prior to the emergency braking event. Following a service visit, I was told nothing further could be done. The vehicle is currently at Audi albany undergoing inspection at the request of Audi of America, including a review of the event data recorder. I am filing this complaint to ensure the incident is part of the federal safety record. A driver assistance system that initiates emergency braking at highway speed without a valid hazard present, on a vehicle with a prior history of false-positive alerts, represents a safety defect that I believe warrants federal documentation and review.

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The vehicle exhibits multiple, unresolved safety-critical defects across software and mechanical systems that create an unpredictable and dangerous driving environment. Despite multiple repair attempts, the manufacturer has failed to certify the vehicle as safe for operation. 1. Critical adas failures (forward collision/lane keeping): automatic emergency braking (pre-sense): the vehicle suffers from unprompted alerts and phantom braking incidents, creating an immediate risk of rear-end collisions. Lane keeping assistance: the system has experienced unexpected steering pull, which could lead to an unprompted lane departure. Adaptive cruise control (acc): the system consistently fails to detect lead vehicles in 40% to 50% of instances. The most recent failure was documented via timestamped screenshot on may 12, 2026, around 4:07 pm pt. This defect is reproducible and renders the automated safety suite unreliable. 2. Powertrain & mechanical defects: pneumatic air leaks: the vehicle exhibits 100% pneumatic air leaks during acceleration. The service center has dismissively characterized a total pneumatic system failure as "normal," which I find technically unacceptable and a sign of neglected mechanical integrity. 3. Electrical & starting system: recurring ignition failures: the vehicle has experienced multiple failures to start, most recently leaving my child and me stranded for 10 minutes. Safety & use impairment: these intermittent failures compromise the vehicle's utility and the safety of my family. Incident history: the first time this occurred, I called Audi roadside assistance, but the engine started approximately 30 minutes later; as a result, I do not call roadside assistance now when it happens and instead attempt to restart it repeatedly. Current status: I am forced to drive the car in a constant dilemma, knowing it might fail at any time and leave me stranded.

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•xxx: purchased new 2025 Audi Q5. •xxx dashboard displayed "check tire pressure" warning for all tires. •xxx: service at Audi marin - reported hatch malfunction, tire pressure concerns, and repeated rollback after brake release during service visit. •xxx: vehicle displayed "p not possible. Risk of rolling away" warning. Vehicle could not be placed into park, required roadside assistance (never showed after 2-hour wait), and could not be safely secured. •xxx: while stopped at a traffic light, both front seat belts tightened aggressively without warning. Passenger was a [xxx] child. •late xxx: collision avoidance/emergency braking warnings continued. Vehicle remained in use while awaiting loaner car availability. •xxx oil service reminder displayed at approximately 5,000 miles. Electronic issues continue. Additional warning lights appeared. Despite multiple service visits, the vehicle continues to experience unresolved safety-related and electronic malfunctions. I have been without the vehicle since xxxdriving a loaner. Dealership reported there is a pending service solution that will be released in the 3rd quarter (maybe September). That is 2 months away - unacceptable- car is unsafe to drive. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

The contact owns a 2018 Audi Q5. The contact stated while driving at an undisclosed speed, the engine seized. No warning lights were illuminated. The contact stated while attempting to start the vehicle, the vehicle failed to start. The contact replaced the battery. The contact stated while attempting to start the vehicle, the vehicle failed to start. The vehicle was towed to an independent mechanic, however the vehicle was not diagnosed. The independent mechanic attempted to start the vehicle, however the vehicle failed to start. The independent mechanic inspected the vehicle and noticed that the gateway control modular was moist. The contact was informed that the gateway control module had become moist because of the broken seal, the vehicle shut down. The contact stated that the contact's wife had spilled a liquid substance into the vehicle. In addition, the contact was provided pictures of the corrosion. The contact referenced an unknown recall which had a similar failure description, however the contact's VIN was not associated. The dealer was made aware of the failure. The contact was informed that the repair was not covered under the recall. In addition, the contact was informed that the unknown recall only covered the seal. The contact was informed that the recall did not cover the replacement of the gateway control modular. The manufacturer was made aware of the failure and a case was filed. The contact was informed that the repair of the corroded seal was covered under the recall. The contact was advised to take the vehicle to the dealer for diagnostic testing. The failure mileage was approximately 103,000. VIN was unavailable.

Adaptive cruise control not working. . . . ,intermitently shutting off. This is coinciding with numerous engine, oil and gas warning lights going off in the Audi mmi system. Lead tech at Audi dealership in norwell MA is telling me that this is a well known issue with the 2025 Audi Q5 needing a software update that will not be available until sometime in the 3rd quarter.

2019 Audi Q5 drive system malfunction/start stop malfunction. Error code will come on randomly in traffic and when you try to put your foot on the gas it hesitates and you need to push harder on the gas. Car will also lose acceleration power and take longer to reach desired speed. Drive system malfunction light will come on as well as an error stating start/stop system malfunction. Have had multiple sensors and battery replaced with only temporary results. Start stop malfunction will come on randomly at any time and then go away for a certain amount of time and come back again. This malfunction is constantly going on and off and is sometimes dangerous because you don’t know when it will happen, if it does happen you don’t know if you need to press harder on the gas, or if you do accelerate you don’t know if you’re damaging your engine. After multiple fixes at Audi dealership and other repair shops, them attempting to address this issue has done nothing for the car leaving me to believe this could be a fault. This issue has been going on for at least 10 months with multiple dealer visits attempting to address this issue.

The module that controls the car’s electronics is located inside a special protective bag. A hole developed in this bag, and water leaked inside. The module is now completely submerged in water. When we started the car, many error messages appeared, but after we turned the car off and tried to start it again, the car would no longer start.

My vehicle has now experienced a serious electrical malfunction a few times, including one again today. Each time, the car suddenly loses power and drops to 40 mph, the steering wheel shakes, and all warning lights come on. This is extremely dangerous and puts my safety—and the safety of others—at risk. The car is brand new and has about 1200 miles. I took the car in previously, and the dealership admitted they do not know how to fix the issue. Despite this, when I called again today after the problem happened, they refused to take the car in. At this point I do not feel safe driving it or having anyone else in the vehicle. This is severely impacting my daily life and mobility. I need immediate action and a resolution to this unsafe situation. I only get run around when I call Audi fletcher jones and my service adviser does not resolve my issue. They don't let me speak to the general manager and they don't give me his email address. Attached are two photos. I have a video which I can submit per your request.

See attached document for complaint.

Randomly the mmi screens are blank. This means I have no speedometer, I cannot see my fuel level and there is no Audio, such as blinker indicator.

Check engine light is on almost constantly on my car. It might turn off and stay that way for a couple of days, but always comes on again. Dealership had made two attempts to "fix" it by just clearing the faults. However, according to the service department the reason why check engine light came on was "faults for loss of communication to powertrain electronics and brake electronics" which I think is a real safety concern. After my last trip to the dealership the check engine light came on after just two days of normal driving. There was also a situation when I was unable to shift to park with the risk of rolling along with some other error messages on the dash. I was unable to lock the vehicle because of that and of course there was a risk of it rolling.

The contact owns a 2021 Audi Q5. The contact stated that while driving at an undisclosed speed, several unknown warning lights illuminated, and the vehicle stalled. Additionally, the windows independently rolled up and down, and the engine seized. While attempting to start the vehicle, the vehicle failed to start. The contact stated that the failure had occurred three times within five days. The vehicle was towed to the dealer where it was purchased. The failure was diagnosed with a failed gateway control module. The contact was informed that the gateway control module needed to be replaced. The vehicle was being repaired. The contact was informed that the plastic protective bag that covered the gateway control module was filled with water. In addition, the dealer informed the contact that the NHTSA campaign number: 21v947000 (electrical system, structure); recall repair was performed prior to the contact purchasing the vehicle. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was approximately 37,200.

The contact owns a 2022 Audi Q5. The contact stated that while the vehicle was parked, the vehicle was started, and the message "electrical system malfunction – stop safely" was displayed. A red warning light flashed and then turned yellow. In another occurrence, while on the freeway, the vehicle accelerated independently, and the collision warning light flashed with a beeping sound, although there were no vehicles nearby. The vehicle was taken to the dealer, but was not diagnosed or repaired. The dealer was unable to duplicate the failure due to invalid data that was received. The contact was informed by the dealer to avoid driving the vehicle when the red light was illuminated. The manufacturer was not notified of the failure. The approximate failure mileage was 23,000.

Sos emergency call malfunction. Besides transmission or engine mounting shakes on idle positions car still 6800 miles.

Fault p003a00 (turbocharger boost control position sensor). Vehicle suffered a catastrophic power failure (limp mode) on day 2 of ownership. Total loss of acceleration while in traffic. Manufacturer admits it is a 'known software issue' with no current fix, creating an extreme collision risk for the driver. " vehicle is at dealership since Feb 4th, 2026.

Control module located under rear seat became slightly wet from spilled liquid, and failed. Engine and electrical failure as a result of control module failure. Audi refuses to cover damages as warranty period is over. Vehicle design is defective.

Brake electronics control unit failure (dtc u041800): logged active diagnostic code u041800 (implausible signal in address 812c). Dealership records confirm no permanent remedy exists, with software patches delayed into q3 2026, leaving active braking and electronic system faults unaddressed. Electrical grid collapse & parasitic battery drain: vehicle experienced exterior lights activating independently during sleep mode and cyclical 300ma to 2. 0a parasitic draws. Required warranty replacement of the central electrical control module (j519), low voltage power distributor module (j1282), and primary 12v battery (ro #aucs214055). Powertrain & transmission engagement failures: experienced check engine light cycling and a total failure to engage "park" for 20 minutes. Scanned hard factory codes p187c00 (gear actuator 3 failure), p086900, and p270800, requiring ten consecutive distance sensor calibrations. Adaptive cruise control & restraints malfunctions: acc fails to engage due to false occupant-detection logic errors, triggering phantom rear-seat belt warnings while driving solo and throwing error messages that compromise restraint safety architecture. Liftgate architectural failures: rear trunk lid fails to open or latch fully due to software conflicts with the mobile key platform, causing the control unit to lose its calibrated position.

The contact owns a 2019 Audi Q5. The contact stated that while driving approximately 30 mph, the vehicle stopped and jerked, and the red master warning light illuminated, and the message “electrical control module” failure was displayed. On other occasions, while driving at undisclosed speeds, the turn signals and brake lights failed to operate as intended, and the message "faulty brake light" was displayed. The vehicle was towed to the residence. The vehicle was taken to a dealer, where it was diagnosed, and determined that there was water trapped in the clogged sunroof drain, and the water leaked, and the control module was covered in water. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 95,000.

On December 22nd I got into the vehicle and a few errors popped up which consisted of “loose wheel warning malfunction” “brakes: limited functionality drive with causation” “active front assist and emergency assist unavailable”. I called the nearest dealer and was told it’s ok to drive it’s just a software glitch and if I don’t feel comfortable driving I should take it to the dealer and come back tomorrow for a loaner since service was closed already. So I proceeded to drive home, about 10 minutes into the drive a warning for the coolant came up so I pulled off into a parking lot and as I went to park another warning came up saying coolant too high turn off vehicle and as I was approaching the parking spot the car started to overheat and smoke. This is a brand new car with barely 1000 miles on it.