2022 Hyundai Elantra Hybrid

Vehicle: 2022 Hyundai Elantra Hybrid Safety Complaint: While driving on the highway, my 2022 Hyundai Elantra Hybrid displayed a warning message stating “Check Hybrid System. Stop Safely.” Immediately after the warning appeared, the vehicle lost power and acceleration. The car entered a reduced-power mode, making it difficult and unsafe to maintain traffic speed. The warning instructed me to stop the vehicle immediately. This occurred while I was traveling at highway speeds, creating a dangerous situation for myself, my passengers, and other drivers. The sudden loss of power could easily result in a rear-end collision or other serious accident because the vehicle is unable to accelerate normally and traffic may not have enough time to react. My vehicle currently has approximately 69,000 miles and is within Hyundai’s hybrid system warranty period. I believe this issue represents a significant safety risk and should be investigated, as other Hyundai Elantra Hybrid owners have reported similar failures. I am requesting that this issue be reviewed due to the potential danger it poses to drivers and the public. Mileage at failure: Approximately 69,000 miles.

NHTSA ID

11742526

Incident

Jun 5, 2026

This 2022 Hyundai Elantra Hybrid poses an imminent fire and safety hazard due to catastrophic high-voltage system failures. On December 11, 2025 (Mileage: 54,527), the vehicle displayed a "Check Hybrid System" warning. The dealership diagnosed a swollen 12V battery and, critically, a melted power relay assembly and melted power cable. This indicates extreme thermal overload. The dealer stated they could not repair it independently and deferred to the Hyundai Engineering Team. This is the second major high-voltage failure. On March 23, 2024 (Mileage: 34,276), the vehicle suffered a total electrical blackout while driving at highway speeds at night. The vehicle lost all motive power, interior lights, and hazard flashers, leaving the car invisible in a high-speed lane. The high-voltage battery was replaced in April 2024, yet the system has failed again with melted wiring less than 20 months later. Despite a previous recall performed in August 2024 (Campaign 9B4 - BMS Software Update for 12V Battery Over Voltage), the electrical system remains unstable. The vehicle currently exhibits signs of thermal runaway. I have been informed by the dealer on Dec 16, 2025, that the wiring has melted, yet they initially refused to provide a repair order documenting these specific findings. This vehicle is a fire risk and a threat to public safety. I am requesting assistance in having this vehicle removed from the road immediately as it constitutes a public safety hazard.

NHTSA ID

11706009

Incident

Dec 11, 2025

The emergency braking system activated and began slowing down the car on two occasions: sometime in the fall of 2022 and on 09/01/2025. In both instances, I was driving about 65mpg on an interstate. There were no cars in front of me to cause the system to activate.

NHTSA ID

11690278

Incident

Sep 1, 2025

I was slowly pulling into a parking spot in a lot. As I approached the curb, I gently pressed the brake to come to a complete stop. However, instead of stopping, the vehicle suddenly and forcefully accelerated forward very fast without warning, resulting in a crash.

NHTSA ID

11676850

Incident

Jul 28, 2025

On [XXX] and [XXX], while driving at approximately 50 MPH, my vehicle experienced a sudden and complete loss of power, presenting an immediate safety hazard. The incident unfolded as follows: Without warning, the car emitted an alarming sound from the cabin. Simultaneously, a message appeared on the dashboard stating "Check Hybrid System" and instructing me to "Pull Over Safely." This was the first and only warning; there were no prior indications or symptoms of any problem before this sudden failure. Immediately upon this warning, the vehicle experienced a total loss of power. The component that failed appears to be the hybrid system itself, leading to a complete electrical system shutdown. The vehicle is currently available for inspection upon request. After safely pulling over and turning off the car, all electrical functions ceased. This included essential safety features such as hazard lights, rendering the vehicle completely inoperable and "electrically dead." My safety and the safety of other motorists were severely put at risk due to the sudden and complete loss of propulsion and all electrical systems (including safety lights) while the vehicle was in motion. This left the vehicle vulnerable and invisible to other traffic, particularly concerning if this occurred on a highway or at night, as it creates a high risk for rear-end collisions or other accidents. I have personal video documentation of this incident, which clearly shows the dashboard warnings and the vehicle's subsequent electrical failure. I am prepared to share this video upon request. Following this alarming event, I took my vehicle to the Wolfchase Dealership in Memphis on May 16 2025. The problem has not been reproduced or confirmed by the dealership. Despite their inspection, the dealership claimed they could not find any issue, stating that "no system of record is recording such code in the vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11669196

Incident

Jun 24, 2025

The 2022 Hyundai Elantra Hybrid Blue intermittently displays Check Hybrid System Stop Safety in instrument cluster screen, which stops the car from driving in either smart or normal. This happens on the roads and highways. This is very unsafe because at high speed when this happens you could easily get rear-ended because the car drops its speed and cannot accelerate any faster than 30 miles per hour and then it degrades to 20 miles per hour until I can find a safe place to park and turn off the car to do the reset to be able to drive again. This happens because the 12-volt lithium battery is not providing an acceptable amount of charge to the hybrid battery. This was also confirmed when I took the battery to get tested and it failed the test.The next part that is unsafe, is replacing the low 12-volt lithium battery, because it is connected to a high voltage 240-volt lithium-ion polymer battery; there a normal person cannot simply replace it. You have to know electronics to make sure you do not get electrocuted. In addition, it takes hours to take out the battery and then it’s hard to find to purchase. I feel Hyundai makes this process difficult as after spending hours to screw it out, you cannot locate the item anywhere. When I spoke to the Hyundai parts person, they could not locate it until I actually brought in the battery. The 12-volt lithium battery was nonrefundable and cost twice as much ($545.92) as I saw online, as low as $282 once I obtain the part number from the Hyundai order, which again is nonrefundable. I feel they make sure this cannot be found to force you to come to them to buy the battery, because all the labels or characters on the battery were not able to locatable. This was proven by me emailing the battery images to the parts person who was trying to find it, but could not until I bring in the actual battery. I was also told it is a special order and that they do not keep them onsite and have to be ordered and wait 7 to 10 days(pdf attach)

NHTSA ID

11663314

Incident

Feb 26, 2025

the air bags failed in deploy and the automatic calling system failed to call the police upon impact. my mirror was taken off in a hit and run and the police were not contacted. the passenger side of my car was hit in an incorrect lane change by the other party and the intercom system did not call the police. i was rear ended in a 45 pmh zone and airbags failed to deploy and the intercom system did not call the police. i was t boned in a 45 mph zone and the airbags failed to deploy and the police were once again not called automatically by the car. due to the amount of damage to the car my lien holder lost interest and did not send any one to check on the damages, not did my insurance as i did not have collision coverage. the police after the tbone said my car looked totaled. my car was checked regularly for alignments and oil changes. there was no warning lamps or anything out of the usual on the dash. since this car was deemed totaled and beyond repair the lien holder dropped interest in the vehicle and was sent to auction on may 14th in naples florida.

NHTSA ID

11661691

Incident

Mar 20, 2025

While driving on the freeway at 65MPH, my car suddenly displayed a "Check Hybrid System , Stop Safely" warning. The vehicle rapidly decelerated to 20MPH and would not respond to acceleration, despite pressing the pedal. This created a dangerous situation for my family, as we were forced to pull over abruptly on the side of the freeway. I had to reset the battery system before the car would restart. Alarmingly, this issue happened twice on same day on [XXX]. I have since contacted the dealership and informed about the problem. The dealership (Larry Miller Hyundai Peoria - 85382) took my car to address the issue on Feb 28th Feb 2025 and performed a HCU software update and informed me that there was a recall and assured me that the problem shouldn't happen again. However on [XXX], the same problem resurfaced. While stopped at a signal, the car once again displayed "Check Hybrid System , stop Safely" and became unresponsive to acceleration. I had to pull over and reset the battery system to get the car moving again. This recurring issue is not only frustrating but becoming increasingly dangerous. I now drive with constant anxiety, unsure when or where the car might suddenly stop again. This ongoing safety risk is unacceptable, especially a supposed fix was applied. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11660435

Incident

May 11, 2025

The National Highway Traffic Safety Administration (NHTSA) has issued an urgent safety advisory regarding dangerous, counterfeit driver‑side airbag inflators manufactured by Jilin Province Detiannuo Automobile Safety System Co., Ltd. (DTN), that have been identified in U.S. vehicles following prior crashes, theft, or non‑certified airbag replacements. These inflators are not approved for use, may rupture during deployment, and have caused serious injuries and fatalities. Please see attached announcement, provided by NHTSA, for more details.

The National Highway Traffic Safety Administration (NHTSA) has identified the presence of substandard and dangerous driver’s-side airbag inflators manufactured by Jilin Province Detiannuo Automobile Safety System Co., Ltd. (DTN). These inflators were not supplied, approved, or authorized by the vehicle manufacturers and have primarily been found in vehicles that previously experienced a crash and underwent airbag replacement using non-genuine parts. These dangerous inflators have ruptured during deployment, posing a serious risk of injury or death due to metal fragments entering the vehicle cabin. To date, Hyundai is aware of three people who have died while driving a Hyundai vehicle with one of these substandard replacement airbag inflators that deployed in what likely would have been a survivable crash. NHTSA has issued a public advisory urging vehicle owners and service professionals to have vehicles inspected if there is reason to believe that a non-genuine replacement airbag may have been installed. Vehicles with salvage or rebuilt titles, prior airbag deployments, or unknown repair histories may present a higher risk. NHTSA strongly cautions against self-inspection by vehicle owners and recommends inspection by trained technicians.

Some 2019MY and newer vehicles equipped with a front view camera may illuminate certain warning lights and trigger DTC C272246 fault code for the front camera. In the following cases, the front camera auto-calibration range may be exceeded while driving: • If the front camera is not properly installed and is completely or partially detached. • In case of excessive changes affecting the vehicle's balance (e.g., loading excessively heavy cargo in a specific location of the vehicle, or significant under-inflation of the tires). • Specific road conditions affecting the vehicle's balance (e.g., excessive road crown) This TSB provides instructions on how to service the vehicle when the front camera related warning light(s) are triggered due to system out of calibration (DTC_C272246).

This bulletin provides information regarding condensation related to the accumulated moisture in the headlamp, rear combination lamp, daytime running lamp (DRL), or fog lamp. This TSB illustrates the various causes of condensation inside the lamp assembly. Lamp assembly replacement is NOT necessary in most cases. This condition can be eliminated by turning on the lamps with the engine running for several minutes or during normal driving operation.

This bulletin provides information related to the changes introduced in the 2025 1st Navigation Map and Software Update. The changes may vary depending on vehicle type, model, and navigation system as described in this TSB.

Certain Hyundai vehicles may exhibit a warning light with Diagnostic Trouble Code (“DTC”) P1BB20 due to a battery over voltage condition.