2023 Hyundai Elantra Hybrid Problems

I was performing a low-speed maneuver to reverse-park into my driveway. After making a right turn between my driveway and the driveway of a neighboring townhouse across the street, I came to a complete stop. When I shifted the vehicle into reverse, the vehicle did not reverse as expected and instead unexpectedly accelerated forward. I applied the brake but was unable to stop the vehicle before it traveled forward into the driveway across the street and struck the garage door of a neighboring townhouse. The maneuver was being performed at low speed. Weather conditions were clear, and the driveway surface was dry. The cause of the unexpected acceleration is unknown at this time. No warning lights, messages, or alerts were observed prior to or during the incident. Immediately following the collision, I placed the vehicle into park and applied the parking brake, at which point the vehicle came to rest. Upon impact, the driver-side front airbag deployed. Smoke and a burning odor were observed coming from the deployed airbag. The incident posed a safety risk due to the vehicle’s unexpected forward movement during a low-speed maneuver and resulted in property damage. No injuries were reported. The vehicle remains available for inspection.

The cruise control function ceased to properly function after automatically increasing the speed to 110 mph. The vehicle is available for inspection upon request. This is a safety risk for myself and for others on the road. If another combination with this fault were to occur (either physically to the driver or to the software), this could lead to an extreme hazard due to the potential for excessive speeds. The first occurrence for this vehicle happened on 4/21/2025; however, additional instances have been reported going back at least a year for other owners of this same model. Initial issue occurred while setting cruise control from 45 mph to 35 mph and then back to 45 mph. The last instance of 45 mph is when the cruise control quickly increased the set speed to 110 mph. The set speed could not be reduced after the issue occurred. This issue is difficult to reproduce, but will always occur after the first instance until the vehicle is restarted. The vehicle has not yet been inspected by the manufacturer. This is a known issue that has occurred for more than a year now. It appears to not be addressed due to the lack of reproducibility. However, when the software issue happens, it is continually reproducible until the vehicle is restarted. No other warning lamps or erroneous events occurred at the time of the software malfunction.

I am reporting a serious safety issue involving my 2023 Hyundai Elantra. The vehicle experienced a sudden mechanical and/or electrical malfunction that made it unsafe to operate. While driving, the vehicle began displaying warning indicators and experienced abnormal performance consistent with a system malfunction. Hybrid system failed, radar malfunction, blind spot malfunction. I couldn't control the car , while I was exiting the highway XXX and took a excit on [XXX] where the incident was happend. Stering wheel got licked out , braking system got soft , failure notification on my dashboard. I couldn't do anything, stuck on that car , it was trying to go left , n trying to flip over. I had used my full forced to pull it back on the road. Had to find parking spot , let it coast drive and I had to press on the engine start button to stop the car. Due to malfunction caused me the collusion incident, my driver side got scratched on my rims and the tiers The issue raised concerns about potential loss of power and vehicle reliability during operation. This created a significant safety risk, as the failure could occur unexpectedly while driving in traffic, increasing the risk of an accident. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Got a check hybrid system while driving on a busy road. Car couldn’t accelerate and had to come to a complete stop.

I was performing a low-speed maneuver to reverse-park into my driveway. After making a right turn between my driveway and the driveway of a neighboring townhouse across the street, I came to a complete stop. When I shifted the vehicle into reverse, the vehicle did not reverse as expected and instead unexpectedly accelerated forward. I applied the brake but was unable to stop the vehicle before it traveled forward into the driveway across the street and struck the garage door of a neighboring townhouse. The maneuver was being performed at low speed. Weather conditions were clear, and the driveway surface was dry. The cause of the unexpected acceleration is unknown at this time. No warning lights, messages, or alerts were observed prior to or during the incident. Immediately following the collision, I placed the vehicle into park and applied the parking brake, at which point the vehicle came to rest. Upon impact, the driver-side front airbag deployed. Smoke and a burning odor were observed coming from the deployed airbag. The incident posed a safety risk due to the vehicle’s unexpected forward movement during a low-speed maneuver and resulted in property damage. No injuries were reported. The vehicle remains available for inspection.

The Elantra had less than 15,000 miles on it. I was driving on [XXX] at about 80MPH for about 1 hour. With no warning, while going up over a very large, high bridge/overpass (above a large outlet emptying from the everglades into the Atlantic ocean near Stuart Florida) the power totally died. A warning light came on saying the hybrid system was not functioning instructing me to pull over to the shoulder. This happened just as I crested the top of the overpass. I was able to coast to the bottom of the bridge, cross two lanes with large 18 wheeler vehicles making this challenging and park on the shoulder at the bottom of the bridge. The vehicle was towed to a nearby dealer. Their mechanic determined the "brain" between the hybrid battery and the drivers controls (the gas peddle) had failed, which disabled all power to the wheels. Had I not been cresting the top of the bridge it would have been impossible for me to move to the shoulder. This was an incredibly dangerous scenario that occurred with no warning. This failure of a key electronic component put me at extreme risk of a high speed accident on a very busy turnpike with no control whatsoever of the speed of the vehicle. There should be a redundant "brain" that would take over in this "failure" situation that would provide power at least for a limited time allowing a driver to maneuver to the shoulder. It was a miracle I was not killed. Had I been driving on limited access high speed lanes (as exist in Orlando where I live and my wife frequently drives which has no real shoulders one can safely pull over onto) the situation would have absolutely life threatening. These high speed toll lanes eliminate any ability to actually safely park and exit the car. I traded the car in (warranty covered repairs) the next day for a normal gas powered Hyundai. I will never drive a hybrid again until this type breakdown has been addressed so it can never occur. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I am reporting a serious safety issue involving my 2023 Hyundai Elantra. The vehicle experienced a sudden mechanical and/or electrical malfunction that made it unsafe to operate. While driving, the vehicle began displaying warning indicators and experienced abnormal performance consistent with a system malfunction. Hybrid system failed, radar malfunction, blind spot malfunction. I couldn't control the car , while I was exiting the highway XXX and took a excit on [XXX] where the incident was happend. Stering wheel got licked out , braking system got soft , failure notification on my dashboard. I couldn't do anything, stuck on that car , it was trying to go left , n trying to flip over. I had used my full forced to pull it back on the road. Had to find parking spot , let it coast drive and I had to press on the engine start button to stop the car. Due to malfunction caused me the collusion incident, my driver side got scratched on my rims and the tiers The issue raised concerns about potential loss of power and vehicle reliability during operation. This created a significant safety risk, as the failure could occur unexpectedly while driving in traffic, increasing the risk of an accident. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

UNKNOWN I had the lane assist feature on and was taking the second lane from right to turn off to exit when the alarm went off, the wheel turned itself and it started braking. There was nothing where it was trying to avoid and actually almost had me run into another by turning me left back onto the freeway while trying to stop. It’s never happened to me before and I take that way regularly.

I am reporting a serious safety issue involving my 2023 Hyundai Elantra. The vehicle experienced a sudden mechanical and/or electrical malfunction that made it unsafe to operate. While driving, the vehicle began displaying warning indicators and experienced abnormal performance consistent with a system malfunction. Hybrid system failed, radar malfunction, blind spot malfunction. I couldn't control the car , while I was exiting the highway XXX and took a excit on [XXX] where the incident was happend. Stering wheel got licked out , braking system got soft , failure notification on my dashboard. I couldn't do anything, stuck on that car , it was trying to go left , n trying to flip over. I had used my full forced to pull it back on the road. Had to find parking spot , let it coast drive and I had to press on the engine start button to stop the car. Due to malfunction caused me the collusion incident, my driver side got scratched on my rims and the tiers The issue raised concerns about potential loss of power and vehicle reliability during operation. This created a significant safety risk, as the failure could occur unexpectedly while driving in traffic, increasing the risk of an accident. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

When driving in bad weather the car started to slide when my husband tried to turn the steering wheel and the steering wheel locked not allowing him to turn the car to avoid the curb. My husband has driven in snow for years as he was born in upstate NY and he has never had a vehicle lock when sliding.

The issue involves the hybrid electric powertrain or electrical control system in my 2023 Hyundai Elantra Limited Hybrid. The vehicle has shut off multiple times while driving, with complete loss of power and propulsion. This poses a serious safety risk, as it happens without warning in the middle of the road. Restarting the car requires shifting into Park and trying multiple times to turn it off, but the vacuole turns back on the first try. I have experienced this issue several times, including twice during a 300-mile highway trip. After each shutdown, the dashboard displays multiple warning lights, including the Check Engine Light, Battery Light, Oil Pressure Light, and Hybrid System Warning (orange car icon). I took a photo immediately after the most recent failure to document these warnings. The vehicle has been inspected three times by two different Hyundai dealerships. Both confirmed the vehicle is under warranty but have not repaired or diagnosed the issue, citing that they cannot replicate it. They have driven it ~200 miles without success. However, they have not pulled ECU data or freeze-frame codes, even though warning lights were active at the time of failure. There are no symptoms or warning messages before the failure — the vehicle shuts off suddenly. The car is available for inspection, and I am in the process of opening a formal case with Hyundai. This is a significant and recurring safety hazard that must be addressed. This issue has an occurred a various speeds including during acceleration and braking. The picture attached is the dashboard after the I indent has occurred and have shifted to park after stopping to try and restart the car to get out of the middle of the road.

While driving in a parking lot. The car wouldn't accelerate. Kept pressing on the gas pedal but the car wouldn't move. After about 5 seconds the car shut down. I had to place the car on P then press the start button, pressed the brake pedal and then the start button again and the car turned back on

I was performing a low-speed maneuver to reverse-park into my driveway. After making a right turn between my driveway and the driveway of a neighboring townhouse across the street, I came to a complete stop. When I shifted the vehicle into reverse, the vehicle did not reverse as expected and instead unexpectedly accelerated forward. I applied the brake but was unable to stop the vehicle before it traveled forward into the driveway across the street and struck the garage door of a neighboring townhouse. The maneuver was being performed at low speed. Weather conditions were clear, and the driveway surface was dry. The cause of the unexpected acceleration is unknown at this time. No warning lights, messages, or alerts were observed prior to or during the incident. Immediately following the collision, I placed the vehicle into park and applied the parking brake, at which point the vehicle came to rest. Upon impact, the driver-side front airbag deployed. Smoke and a burning odor were observed coming from the deployed airbag. The incident posed a safety risk due to the vehicle’s unexpected forward movement during a low-speed maneuver and resulted in property damage. No injuries were reported. The vehicle remains available for inspection.

Animal chewed the wiring harness causing an airbag malfunction warning and transmission failure. My safety was put at risk because the airbag wouldn't work and the transmission failed while I was driving. The vehicle is being repaired right now with a new harness. Talking with the insurance adjuster. I was informed this was a common issue with this vehicle due to the materials the manufacturer uses. The harness is not properly designed with the proper materials for the environment it is used in.

During driving, vehicle displayed a system error indicating an issue with the hybrid system. The vehicle then immediately, and without warning, completely shut off and caused the driver to have to manually guide the vehicle to the side of the road without power assistance. The vehicle is available for inspection upon request, however we have taken it to the dealership who have inspected the vehicle but told us they could not find an issue, even though we clearly experienced on. The incident can easily be verified by our insurance company, who had to tow the vehicle. This incident put our safety at risk as it not only caused a sudden vehicle failure which could have further risked accident, but the driver also suffered heat stroke waiting for the tow truck. As stated earlier, the service center at the dealership could not reproduce or confirm the issue and have simply stated that the vehicle should just be driven as is. The vehicle has not been inspected by the manufacturer, police, or insurance representatives. I'd like to further note that this service station and dealership is called Horne Hyundai and is located in Apache Junction, Arizona. They have ignored this issue, gaslighted us, and left us with no option but to report them and this vehicle.

I experienced an issue where I was driving the vehicle, and then a "hybrid system fault" message appeared on the driver information display followed by the complete loss of power. This made me have to pull over to the side of the road with no ability to accelerate out of the way of traffic to come to a stop. Once I was stopped I tuned off the vehicle and tried to turn it back on, but the vehicle would not respond so I attempted pressing the 12 volt battery reset button to the left of the steering wheel to see if this would allow me to turn the vehicle on and the car came back to life with no warning lights or messages and drove normally. This happened three more times over the course of ~1.5 hrs on my way home on the highway. I understand that things happen, I just wish there was more warning before all power was cut and the vehicle went into limp mode as this left me in a dangerous situation. The vehicle has been dropped off at the dealer and is awaiting a new hybrid battery replacement under warranty.

The contact owns a 2023 Hyundai Elantra. The contact stated that while driving at an undisclosed speed at night, the contact became aware that the driver's side headlamp was not functioning. No warning lights were illuminated. The vehicle was taken to the dealer, who determined that condensation had caused damage to the LED headlamps. The contact was informed that the headlamp assembly needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 16,000.

I purchased the car brand new March 2023. I noticed the front driver headlight fogs and has condensation in cool weather. I mentioned to the Dealership and they said it was a known issue but no fix for it. The light was sealed properly. This has been on going since 2023. The condensation has gotten worse and is a safety visability issue.

The contact owns a 2023 Hyundai Elantra. The contact stated while parking the vehicle, he attempted to lock the door manually; however, the door failed to lock as needed. The contact stated that the door could only be securely locked by using the key fob. The contact stated that the door failed to lock as designed. There was no warning light illuminated. The vehicle was taken to the dealer to be diagnosed and the contact was informed that the vehicle operated as designed. The vehicle was not repaired. The manufacturer was notified of the failure but offered no assistance. The failure mileage was approximately 45.

In the 4 corners of the moonroof where the metal roof meets the moonroof, there is a visible dent/metal tension in each corner. After receiving professional opinions for local body shops, they've all come to the same conclusion: The moonroof was improperly or poorly installed at the factory, which is leading to the moonroof dragging down on the metal corners of the roof leading to visible tension/dents in these spots. Furthermore, the issue is continuing to worsen as time goes on.

My 2023 Hyundai Elantra Hybrid has has defective windshield washer nozzles 2 times so far. The factory nozzles clogged and had to be replaced. Then I got replacements installed under warranty by the local dealership. Those are now clogged exactly the same as the originals. The replacement nozzles failed much faster than the factory original equipment parts did. I am only using standard washer fluid. The fluid was tested by the dealership and is normal. Even high pressure compressed air can’t get through the nozzles at all. I am having a second replacement set ordered as of today. I suggest a recall or redesign of these defective nozzles. If you are driving just after it has rained and a passing vehicle hits a puddle and splashes dirty water all over your windshield you have no way to spray it off and clean it, so you can’t see where you are going at all. This is a major safety issue and will definitely cause an accident in such circumstances. It has been raining in my area several days per week for the past couple of months. There is lots of construction and road construction in many areas, so there is lots of dirt/mud after each rain on the roads. This creates a potentially dangerous and possibly life-ending situation if you are driving, get your windshield splashed with muddy water and can’t spray it off to clear it and can’t see where you are going suddenly, while you are on a highway. If you can’t see through the windshield you can’t even see if it is safe to pull off to the side of the road or not. These windshield nozzles need an emergency redesign and recall issued.