2024 Audi Q4 E-Tron Electrical Problems

The high-voltage charging system has repeatedly malfunctioned. The vehicle intermittently displays a "Charging System Malfunction" warning and a message that only AC charging is possible, the charge-port indicator blinks green and then red, and the vehicle cannot be reliably charged. The vehicle and the affected charging components are available for inspection on request. Safety risk: because the vehicle cannot be dependably charged, it can be left without sufficient power to complete a trip, creating a risk of losing motive power and leaving the driver stranded, potentially on a roadway or in an unsafe location. The affected onboard charger is the subject of Audi Safety Recall 93FR (Onboard Charger with Integrated DC/DC-Converter) — a component the manufacturer has already identified as safety-related. As of 8/10/26, the fault has returned and I no longer consider the vehicle safe to rely on for normal driving. Reproduced and confirmed by a dealer: yes, on multiple occasions. On 06/03/2026 (~52,771 miles), Audi Tysons Corner recorded the "Charging System Malfunction / unable to charge / blinks green then red" complaint and performed a combined software update (ID.S 5.4.3, TSB 2080398). On 07/08/2026 (~54,673 miles), the same dealer recorded the "Charging System Malfunction / only AC charging possible" complaint, reported diagnostic fault P33E800 (charge socket / charge connector lock mechanical malfunction), and replaced the Connector Lock 1 Actuator (F498). The defect has since returned. Inspected by the manufacturer and others: the vehicle has been inspected and serviced only by Audi authorized dealers (Audi Tysons Corner and Audi Chantilly), including warranty and recall work, with diagnostic/GFF logs uploaded to Audi. On 10/13/2025 (~37,447 miles) Audi performed Safety Recall 93FR on the onboard charger, and the high-voltage charger was subsequently replaced under that recall. The vehicle has not been inspected by police or insurance. Repair invoices are avail

NHTSA ID

11755869

Incident

Jun 12, 2026

On March 20, 2026, while my 2022 Audi Q4 e-tron (VIN: [XXX] ) was parked in my private garage at approximately 98% battery charge, I attempted to start the vehicle and experienced a complete electrical system failure. All electronic systems failed simultaneously, including: brake system (Brake System Failure warning displayed), parking brake sensor, traffic/charging system, power windows, and side view mirrors. The vehicle could not be placed into neutral. AAA was dispatched and the vehicle required a jump-start to the 12-volt auxiliary system before it could be moved. The vehicle was towed to Audi Beverly Hills for inspection. The dealership diagnosed the fault as: Control Module Main Processor Performance, Symptom Code 20079, per Technical Service Bulletin TSB 2074484/3. Per that TSB, the dealer was instructed by Audi of America to create a PSS (Pending Service Solution) record, erase the fault memory, and release the vehicle to me with no repair performed. The stated guidance from Audi of America to the dealer was to inform me that this is "an extremely infrequent fault" that is "being reviewed." No fix exists. No timeline for a fix has been provided. The vehicle was released to me with the underlying defect unresolved. This is a known, manufacturer-acknowledged defect with no current remedy. As a fully electric vehicle, the Q4 e-tron's braking and all safety systems are electronically dependent. A recurrence of this fault while driving presents an unreasonable safety risk. I am requesting NHTSA investigate whether TSB XXX /3 and Symptom Code 20079 warrant a formal safety recall. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11726744

Incident

Mar 20, 2026

I am filing this complaint due to ongoing electronic and drivetrain malfunctions that may impact safe vehicle operation. AWD System Malfunction (Primary Safety Concern) The vehicle repeatedly displays four-wheel drive system malfunction warnings. I have brought the vehicle to the dealership three times for this same issue. The malfunction continues unresolved, raising concerns about traction, stability, and drivetrain reliability. Intermittent Entry Failure Biometric entry intermittently fails, forcing use of the key fob. This could delay access in emergency situations. Remote System Failures Remote vehicle functions (lock/unlock and climate control) operate inconsistently or fail entirely, often generating error messages. Audi has stated this is a system infrastructure issue with no current fix. Battery Power Inconsistency Although the battery indicates 100% charge, actual available power never reaches full output and drops shortly after driving. This creates uncertainty about vehicle performance and usable range. HUD Feature Does Not Perform as Advertised The head-up display does not show surrounding vehicle speeds as advertised, only colored indicators. This removes expected situational awareness information. Summary The vehicle exhibits repeated drivetrain warnings, electronic access failures, and inconsistent battery performance. These issues persist despite multiple service visits. I am requesting this complaint be formally recorded and investigated due to potential safety implications.

NHTSA ID

11718122

Incident

May 14, 2025

At least a dozen times, while accelerating from a complete stop, the car has experienced sudden unintended very hard braking without driver input. After very hard brake, car falls out of gear and needs to be restarted and put back in gear. -In clear, dry, temperate weather -Day and night -In drive and reverse -While accelerator engaged -Not touching brake pedal -No obstacles, pedestrians or vehicles present that would require braking -No warnings, alerts or messages on screen -Occurs randomly, nothing to indicate braking is needed -Most recent incident, on flat, familiar road, clear, temperate weather, no obstacles, car unexpectedly braked after accelerating from traffic light, fell out of gear and would not go back into gear for several minutes, resulting in near rear-end collision with multiple vehicles behind that did not expect sudden stop while accelerating. Eventually car would drive a short distance then hard brake, slip out of gear, not be able to drive. This was repeated 4 times before finally being able to drive without failure. -Audi inspected, could not reproduce the issue. It occurs very randomly, so it’s difficult to reproduce on demand. -No fault codes were found or stored -Dealer said without being able to reproduce it there was nothing to be done. I asked for TAC case to be opened for assistance. They strongly refused but eventually agreed. Case was opened but immediately rejected (within minutes). Later they said it was rejected for missing info, including location of incidents, which they never asked me for and I could have provided. Sudden random very hard braking and going into park while accelerating, then not being able to drive, with no warnings or fault codes, is a safety hazard.This has happened many times over a year. Other vehicles can crash into an unexpected stopped car in traffic. The last time I came within a millisecond of a major crash.

NHTSA ID

11714579

Incident

Jan 7, 2026

Car had electrical malfunction warning please contact costumer support and car died and zero damage to the body or the car. But the side air bags faulty went off. This car had a prior recall on file for same issues of car dying off and clerical problems. I got this car in September 2025 and had issue with it within the second month of having this car. I was not told there was a prior recall at all.

NHTSA ID

11705977

Incident

Oct 26, 2025

I was stopped in line at a drive through. The car started rolling (electric cars should not do that) so I tapped the brakes. The car started accelerating and I started braking hard and the car just sped up. Auto braking and collision warning did not kick in. The car slammed into the car parked in front of me and drove it forward about 10 feet. The driver has soft tissue injuries as do I. In the past, it has also lost acceleration while driving did not respond to the gas pedal. I frequently get warnings that the safety features are temporarily not working.

NHTSA ID

11705575

Incident

Nov 17, 2025

I am reporting multiple ongoing electrical system malfunctions on my 2024 Audi Q4 55 e-tron SUV that create a safety risk, including sudden loss of functionality and warnings instructing me to stop driving. These issues began approximately two months after I purchased the vehicle and continue to occur. The car has been at Audi Bellevue for the second times since 11/5/2025. The car with error was initially dropped off at the dealership on 09/27/2025. The vehicle repeatedly and sporadically displays the following warnings (even when at Audi dealership. “Electrical system". Malfunction! “Safety system: fault” See owners manual “Vehicle sound: malfunction” Pedestrians cannot hear vehicle. Please contact service (when the car is being driven) During some of these events, vehicle drivability is compromised, systems shut down unexpectedly, and the car instructs me to exit or stop driving. This creates a potential risk of loss of power while driving. The vehicle has been at Audi Bellevue now for approximately four weeks since 11/5/2025 attempting diagnosis and repair. I was informed that the dealership opened a TAC (technical assistance case) with Audi corporate, but they have not been able to resolve the issue. I was also told there is a related issue affecting the Audi e-tron GT and that the fix for that model cannot be applied to my Q4. My vehicle appears to be part of the national recall 25V125000 (Audi recall 93FR) covering the on-board charger/DC-DC converter (OCDC) that can fail and result in 12-volt battery depletion and loss of drive power. I have not been informed whether parts for this recall are available or whether my vehicle has been repaired under this recall. This is a safety-critical issue, and the repeated failures and warnings make the vehicle unreliable and potentially hazardous to drive. I am requesting that NHTSA document this defect and investigate whether other 2024 Audi Q4 e-tron SUVs are experiencing similar electrical failures.

NHTSA ID

11702104

Incident

Sep 27, 2025

The contact leased a 2024 Audi Q4 E-Tron. The contact stated after the dealer had delivered the brand-new vehicle to the contact, the contact became aware that the VIN was included in NHTSA Campaign Number: 25V125000 (Electrical System); prior to the lease agreement; however, the dealer failed to disclose the recall information to the contact, and the part to do the recall repair was not yet available. Additionally, the contact stated that the vehicle had failed to charge. The vehicle was taken to the dealer, where the contact was informed that the failure could be related to the recall. The vehicle was not repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure, but no assistance was provided. The failure mileage was approximately 150. VIN tool confirms parts not available.

NHTSA ID

11664833

Incident

May 14, 2025

Mileage

150 mi

The contact owns a 2024 Audi Q4 E-Tron. The contact received notification of NHTSA Campaign Number: 25V125000 (Electrical System); however, the part to do the recall repair was not yet available. The contact stated that while idling and opening the front driver's side door to grab a parking lot ticket, the vehicle turned off. The contact stated that the vehicle was able to restart after several attempts. Additionally, the contact stated that the vehicle had temporarily failed to charge. The local dealer was contacted. The vehicle was not diagnosed or repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The failure mileage was approximately 1,000. VIN tool confirms parts not available.

NHTSA ID

11659525

Incident

Mar 7, 2025

Mileage

1,000 mi

The contact owns a 2024 Audi Q4 E-Tron. The contact received notification of NHTSA Campaign Number: 25V125000 (Electrical System); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

NHTSA ID

11656832

Incident

Apr 25, 2025

The contact owns a 2024 Audi Q4 E-Tron. The contact stated while driving at various speeds, the message "Vehicle Sound Malfunction! Pedestrian Cannot Hear Vehicle. Please Contact Service" was displayed. The contact stated that the failure recurred intermittently. The vehicle was taken to the dealer, where it was diagnosed. The dealer informed the contact that the electric vehicle sound alert system was malfunctioning. The dealer informed the contact that the manufacturer's solution for the failure was pending. The vehicle was not repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 600.

NHTSA ID

11652611

Incident

Oct 7, 2024

Mileage

600 mi

The contact owns a 2024 Audi Q4 E-Tron. The contact stated that the vehicle had experienced several electrical failures and would not immediately start on several occasions. The vehicle was taken to the dealer who performed software updates but the failures continued to occur. Later, while driving the vehicle had randomly shut off. The vehicle was towed to the dealer but the cause of the failures was not yet determined. The manufacturer was notified of the failures. The failure mileage was 200.

NHTSA ID

11634912

Incident

May 8, 2024

Mileage

200 mi

The contact owns a 2024 AUDI Q4 50 E-Tron. The contact stated while driving at an undisclosed speed, the vehicle unexpectedly dialed emergency roadside assistance. The vehicle returned to normal functionality, but the failure became a regular occurrence. No warning lights were illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the SOS system control module. The contact was informed that a software update was required; however, the software update was not yet available. The vehicle was not repaired. The manufacturer was notified of the failure, and a case was opened. The failure mileage was 65.

NHTSA ID

11609422

Incident

Aug 19, 2024

Mileage

65 mi

have signed a lease on an Audi Q4 S line prestige and picked it up Saturday [XXX] afternoon, leaving the dealership the car had a yellow warning light, I texted sales team who said it’s ok. On the drive home (Oakland to West SJ), while driving on [XXX] (about 30 min in) the driver door opened while driving, I had to stop on side of freeway and close the door. 5 min later I got home, by then battery warning was red I stopped in my driveway and called dealership who asked me to drive car to service in Steven’s creek, however the car refused to go into gear and just stopped. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11598073

Incident

Jun 29, 2024