2014 Hyundai Sonata electrical problems

Filed Jun 29, 2026 · Electrical, Engine · NC

I was driving my 2014 hyundai sonata that I only had for 3 months when it just quit on me. I pulled over and seen when white smoke was coming from the wires.

Filed Feb 17, 2026 · Electrical · GA

Odometer Fraud. The contact owns a 2014 Hyundai Sonata. The contact purchased the vehicle on April 28, 2025, with 28,974 miles from a dealer. On January 20, 2026, while attempting to start the vehicle after being parked for a while, the vehicle lost power and failed to start. The contact walked to an AutoZone nearby, where a mechanic diagnosed that the battery and starter needed to be replaced. The vehicle was repaired while with the mechanic, and the contact was informed that the actual mileage on the vehicle was 170,123. The contact reported the issue to the dealer and was informed that it would be investigated; however, the contact had not received any additional information. The dealer had taken possession of the vehicle and informed the contact that payments were still expected despite the odometer discrepancy. The manufacturer was informed of the failure and the odometer discrepancy. The failure mileage was not provided.

Filed Jan 16, 2026 · Electrical, Engine · OH

While driving with my family on a busy freeway at approximately 70 mph, our vehicle suddenly displayed a loud, urgent warning: “Hybrid System Warning – Safely Stop and Do Not Drive!” At the same moment, the car lost the ability to accelerate without any prior signs of trouble. We were extremely fortunate to have enough momentum to coast to the shoulder and shut the vehicle off, unsure of how serious the issue might be. Being stranded without warning on a high‑speed highway put my entire family in a dangerous situation. After a few minutes, we restarted the car to see if we could at least get it off the freeway. The warning had disappeared, and the vehicle drove normally, allowing us to take back roads home. The lack of any prior symptoms makes this even more concerning. Losing acceleration at highway speeds with no warning is a major safety hazard. We took the vehicle to a dealership immediately, but because the warning light was no longer active, they were unable to diagnose the problem. A few days later, the same warning appeared again—this time only a couple minutes from home. I turned around immediately for safety, parked the car, and once again the warning disappeared as soon as the vehicle was shut off. At this point, we have a car sitting in our driveway that we do not feel safe driving. The dealership cannot identify or repair the issue unless the warning is active, & even then, they cannot guarantee that a diagnostic code will appear. After researching this problem online, it’s clear that many other Hyundai owners are experiencing the same issue, often spending thousands of dollars without a definitive fix. Despite how common & dangerous this problem appears to be, there are no recalls & no consistent guidance from dealerships. This situation is unacceptable from a safety standpoint. A vehicle that can suddenly lose power at highway speeds—with no warning and no reliable way to diagnose the cause—poses a serious risk to EVERYONE and needs to be investigated

Filed Nov 24, 2025 · Electrical · CT

The High-Voltage (HV) Hybrid Battery Pack Assembly failed, resulting in a system shutdown and the required replacement. The primary code is DTC P0A80 ("Replace Hybrid Battery Pack"), which indicates an internal manufacturing or design flaw, specifically a weak battery module or compromised internal connection, not normal wear. The defective component (the high-voltage battery) is currently at and is available for inspection. The entire vehicle is also compromised by the Anti-Lock Brake System (ABS) Module defect (the federal safety agency Recall 23V-651000). My safety was put at risk in two primary ways: 1. Immediate Loss of Power: The hybrid system failure resulted in a loss of drivetrain power, rendering the vehicle nearly immobile. This occurred on at approximately mph, placing me at high risk of a collision. 2. Latent Fire Risk: My vehicle is covered under the federal safety agency ID 23V-651000 fire risk recall due to the ABS module. Hyundai specifically advised owners of these vehicles to "park their vehicles outside and away from structures" until the remedy is complete, confirming the severity of the latent fire hazard. The failure of the secondary HV battery system occurred within this already dangerous, electrically unstable environment. Yes, the vehicle was inspected by the Hyundai dealership / independent shop at the time of failure.. The manufacturer's corporate division has been contacted and is aware of the defect and the resulting $10,000 replacement estimate, as they offered a 50% "goodwill" subsidy which I am rejecting, asserting 100% coverage is required for a defect. Yes. The primary preceding warning was the intermittent appearance of the "Check Hybrid System, Turn off engine" warning.

Filed Jul 24, 2025 · Brakes, Electrical · AZ

The electrical in the entire car is malfunctioning. Sometimes the brake lights don’t work due to wiring, other times the seats control don’t work and the cables to battery is not connected/firing correctly. Has an entire electrical issue

Filed Jul 7, 2025 · Electrical, Engine · CA

Dear Sir/Madam, I am writing to file a formal safety complaint regarding a dangerous incident involving my Hyundai Sonata Hybrid (VIN: [XXX] ) and Hyundai Motor America’s failure to fully correct the issue. Incident Summary: While driving on the freeway, the vehicle suddenly displayed the following alarming warnings: “Hybrid System Warning! Safely Stop and Do Not Drive” “Check Charging System” Immediately after these messages appeared, the car lost all power and shut down in the middle of the road. I had my two young children (ages XXX and XXX) in the car, making the situation extremely unsafe and traumatic. The vehicle lost all mobility and provided no opportunity to safely pull over. After contacting Hyundai Corporate multiple times, a case manager was eventually assigned to my case. At Hyundai’s request, I towed the vehicle to AutoNation Hyundai Valencia for diagnostic evaluation. The dealership diagnosed the issue as error code P0A78, indicating a transmission failure. Hyundai Corporate offered to cover 60% of the repair cost, leaving me responsible for the remaining 40%—an amount that exceeds the current value of the vehicle. This proposed resolution is not reasonable considering the severity of the safety risk and the vehicle’s low mileage. My primary concern is that this is an extremely dangerous defect, as the vehicle loses all power without warning, leaving the driver unable to move the car to a safe location. Requested Actions: A formal investigation into the safety and reliability of Hyundai’s hybrid systems, specifically in 2014 Sonata Hybrid vehicles. A determination of whether this defect qualifies under Hyundai’s warranty or federal safety defect regulations. Full compensation from Hyundai Corporate to cover 100% of the repair costs to correct this serious safety issue. Thank you for your time and attention to this critical matter. I look forward to your prompt response and appropriate action. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5

Filed Jun 14, 2025 · Electrical, Transmission · CA

Formal Complaint – Hybrid System Failure, Safety Risk (VIN: [XXX] | Hyundai Case #[XXX]) Dear Sir/Madam, I am writing to file a formal safety complaint regarding a dangerous incident involving my Hyundai hybrid vehicle (VIN: [XXX] ) and Hyundai Motor America's failure to respond meaningfully to repeated requests for assistance. Incident Summary: On [XXX], while driving with my two young children (ages [XXX] and [XXX] ), my vehicle suddenly displayed the following critical warnings: “Hybrid System Warning! Safely Stop and Do Not Drive” “Check Charging System” Immediately after these messages appeared, the car lost all power and came to a complete stop in the middle of the road. This created an extremely hazardous and distressing situation for me and my family. Although the vehicle is a few years old, it has very low mileage (38,345 miles), and I did not expect such a catastrophic failure. I submitted a report to Hyundai Customer Support on May 30, 2025 (Case #[XXX]) and followed up on June 9, 2025, but have only received an automated acknowledgment—no response, investigation, or support to date. Attachments: A video clip showing the warning messages at the time of the incident (I cannot upload the video clip since the option is not there, but I do have it if required) Requested Actions: A formal investigation into the safety and reliability of Hyundai's hybrid systems. A determination as to whether this incident qualifies under Hyundai’s warranty or federal safety defect regulations. Immediate contact from Hyundai with the next steps regarding inspection, resolution, or compensation. I am cc’ing Hyundai Motor America to ensure this matter is escalated appropriately and receives the attention it warrants. Thank you for your time and consideration. I look forward to your timely response. Sincerely, [XXX] [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed May 29, 2025 · Brakes, Electrical · FL

the car has abruptly applied braking while driving. I took the car to get checked after that and i was told that there was nothing wrong except that the pads will need to be change sooner than later. I mechanic did tell me that it could be a safety issue because it was an uncontrollable. I than took the car to the Hyundai dealer for them to diagnose the car. They proposed that i change everything, including the brake pedal, which to me, sounded very fishy. One week ago, while driving, the car suddenly jammed on the brakes again. This particular time, it was also emitting smoke, either from the front or the bottom.

Filed Mar 21, 2025 · Electrical · 138,000 miles · FL

The contact owns a 2014 Hyundai Sonata. While driving at various speeds, the steering wheel was shaking and jumping, with the headlights flickering, and the steering wheel lost resistance, and became easier to maneuver. While turning the vehicle either to the left or the right, there was a vibrating sound coming from underneath the hood of the vehicle. After the sound occurred, the contact noticed that after turning off the vehicle and then attempting to restart the vehicle, the vehicle failed to start. The contact manually moved the serpentine belt first to successfully start the vehicle. The exterior lights failed to illuminate intermittently. The air bag and battery failure warning lights were illuminated. The vehicle was included in the federal safety agency Campaign Number: 17V226000 (Engine and Engine Cooling); and the vehicle was taken to the dealer and the engine was replaced. After having the recall repair completed, the failure reoccurred. The vehicle was returned to the dealer, who then diagnosed the battery was malfunctioning due to a loosened terminal. The terminal was tightened up however, the failure persisted. The vehicle was taken to a certified mechanic who tightened the terminal; however, the failure persisted. The vehicle was taken to another certified mechanic who placed an aluminum piece to assist with securing the terminal. The failure reoccurred. The vehicle was not diagnosed or repaired. The manufacturer was not informed of the failure. The failure mileage was 138,000.

Filed Jan 29, 2025 · Electrical, Transmission · GA

When I was driving on highway check brake warning came up with hybrid system warning I wasn’t be able to stop or accelerate I slowed down and pulled over might caused a big accident.