I first experienced HEV hybrid system issue back in 2022. I took my sonata to the dealership which they had over a month to try to fix the problem which they did for the time. Now a year later I-??m back with the same issues and the dealer basically saying they can-??t see my car for a month then don-??t know how long it-??s going to take to fix the issues if the even. Nobody can really tell me what-??s wrong with my car. This the second time it-??s been a safety hazard while driving on the interstate and the system malfunctions causing a hazard to me and drivers around me because the vehicle has basically cuts off rapidly slowing the vehicle down

- Virginia Beach, VA, USA

Driving the car on the freeway, the battery light came on, and after that few other warning lights came on and I pulled over by then the car stopped and didn't turn on. It was scary since I was on the freeway. No other warning prior to that and the car was very well maintained even during the last recommended service everything was checked and no recommendation was made regarding the alternator. It was the alternator that caused the problem according to the dealer diagnosis.

- Chino Hills, CA, USA

This issue has happened twice in one month on my Hyundai sonata hybrid that I-??ve had for less than 3 years. It is a 2017 model. While driving on the interstate, the car will stop accelerating and all warning lights will come on along with -??Check hybrid engine. Turn off engine-??. The dealership has yet to find out the problem and cannot tell me what the issue is both times I-??ve brought it in (it-??s had ti be towed both times). I cannot afford to keep paying for repairs on an almost new car along with the safety concerns of driving it. I am attaching pictures of both times it happened- noting that it is the same warning each time. It looks like multiple owners are having this issue and none has yet to be resolved.

- Daphne, AL, USA

HEV light comes on and the car starts slowing down & beeping. Unsure what the issue is but this started once the car had more than 100k miles on

- Covington, GA, USA

I have a 2017 Hyundai Sonata that has had 3 recalls. I purchased the car in 2019 and all three recalls have been issued after 2019. Since I-??ve had the car I-??ve never taken it to Hyundai to get the recalls taken care of. Until recently I took my car to get the recalls fixed and they told me they had already been taken care of. The gave me the dealers contact information and I-??ve never taken my vehicle to them they claim to have serviced my car at 122000 miles and I only have 94000 miles in my car. I believe they used my vin number to summit they fixed the recalls when my vehicle was never at their dealer. I contacted Hyundai and have not received any call back. The recalls for my vehicle are very serious recalls that I need to get fixed. One of them is the malfunctioning of the trunk latch my trunk does not open or close right now. I have a 6 month old baby and I need to put her stroller in trunk and I-??m unable to do so. Also my car vandalized twice they tried to steal it. I need the security update. I just don-??t know who I need to contact to help me get this resolved.

- Laguna Niguel, CA, USA

National Highway Traffic Safety Administration 1200 New Jersey Avenue, SE Washington, DC 20590 Subject: Anti-Theft Upgrade Request and Complaint Dear Sir/Madam, I am writing this letter as an Autochthon American woman exercising my rights to conduct commerce and practice freedom of religion, seeking assistance and resolution for a distressing incident related to the theft of my conveyance. I believe that the faulty design system of my Hyundai, which was advertised as reliable, contributed to the unfortunate incident of theft. On [date of theft], my vehicle, a [make, model, year, color, license plate number], was stolen, and it has had a severe impact on my ability to conduct commerce, generate income, and practice my religious rights freely. The theft has left me under duress, causing immense stress and a crippling financial situation. The advertised reliability of Hyundai vehicles has proven to be far from the truth in my case, as well as the experience of many others. I am seeking assistance and action from the National Highway Traffic Safety Administration to address this issue and improve the anti-theft measures in Hyundai vehicles. My inability to utilize my vehicle has significantly hindered my daily life, preventing me from engaging in productive work and fulfilling my religious obligations. I implore the National Highway Traffic Safety Administration to thoroughly investigate this matter and take necessary measures to enhance the security and anti-theft features in Hyundai vehicles. I kindly request the following actions: 1. An investigation into the reported faulty design system contributing to the theft of my vehicle and its impact on others. 2. A prompt recall and implementation of an effective anti-theft upgrade for all affected Hyundai models to prevent similar incidents in the future. 3. Adequate compensation or support to help alleviate the financial burden caused by the theft and its consequences. I am aware of the National Highway Traffic Safety Adm

- Gwynn Oak Ave, MD, USA

Multiple Error codes popped up on Multiple occasions. Lost power and last code was "Check Hybrid System Shut off Engine" HEV System Error. Battery, Engine, Collison, and Maintenance Error Lights showing on Dashboard. 06/ 22 - Dealership inspected and worked on Safety Recalls only. Nothing else was found. 10/22 - Fix Finder report showed Error code P0455. Vehicles reset itself somehow over the weekend. No issues on Monday morning. 11/22 - Lost all power. Towed to Dealership. They reset codes P0455 and P0456. Test passed w/ no further issues. 07/09/2023 - Driving 65mph and loss power. Multiple Error codes. Slowed to 20mph and made into driveway. HEV Shut off Engine came on as I stopped.

- Bakersfield, CA, USA

I have financed my Hyundai Sonata Sport 2017 in December of 2019. I have not had any issues until this current year of 2023. I have noticed that with every oil change that I receive that I would have to go back to the dealership or certified mechanic a month or two earlier. I personal checked for leaks but seen no signs of why I had to get constant oil changes. Recently, when driving on the highway speed limit at 70 mph and my car went to 60 mph. The engine light came on but no other warning. I stopped the car, check the oil level which was pretty low and topped it off. I let the car sit for a short while as I was only 5 mins away from home. Soon as I made it back, I check the oil level again which was in the line. Check for visible leaks. I figured my car shook as it did and idle at the speed do to a misfire with the spark plugs/coils which I had already replaced 2 months prior to the incident. I was able to use a car scanner from AutoZone to check for codes but there wasn't an engine light at all on the dashboard. There was only one code that did show which was P1326 but no engine light or flashing engine light. I then schedule an appointment for an oil change and to confirm that the engine light code was with Firestone Auto Care to analyze the issue. They did an overall check over on the car, checked for codes, and changed the oil in which they found no issues. With driving my car to test if there were any issues it completely shut down and did not want to start. They called me to tell me that the engine was locked. They tried turning the engine over multiple times, but nothing would start up. Due to not knowing what was going on with my vehicle I felt unsafe with driving it as it completely slowed down on the highway. As other cars where speeding by. It gave no indications prior to the incident that anything was wrong. I am waiting to see a Hyundai dealership to inspect my vehicle which they are booked until next month. My car is currently disabled.

- Norfolk, VA, USA

My 2017 Hyundai hybrid PHEV vehicle stuttered and failed to accelerate when the gas pedal was depressed and a warning light indicated a problem which was confirmed as a failed battery in January 2023. I was advised by the Hyundai Sonata service center 13 weeks ago that the vehicle was unsafe to drive due to a defective battery. They have not been able to replace the battery or provide an estimate of when the replacement battery will be delivered. The battery has a lifetime warranty but the Hyundai company and dealership is not providing a loaner vehicle or reimbursing me for rental vehicle while the unsafe vehicle sits in the service center for more than 3 months. Please help.

- Santa Cruz, CA, USA

Problem began Dec. 2021. Has occurred on 16 occasions since then. Warning light "Check Hybrid System; Turn off Engine" comes on while driving. The car then shuts off the engine and there is a 100% loss of motive power. Sometimes is associated with very rough braking with the car "knocking'." On 3 occasions there has been partial/near complete loss of braking power. All incidents have occurred while under power, so far all while under 45 mph. No accidents yet. Two near collisions from the rear. Hyundai was notified of the problem Dec. 2021/Jan. 2022. After a month of testing they stated the car needed a new plug-in hybrid battery. One was not available and due to "supply chain issues" is still not available 15 months later. Dealership provided a loaner vehicle Jan to Sept. 2022. They requested their car back and Hyundai initially agreed to cover the cost of a rental car. I rented a car for 6 weeks in Sept.-Oct. 2022 at which point a new case manager informed me that Hyundai would not pay for a rental vehicle any longer (note: they did reimburse me the cost of those 6 weeks rental). Hyundai is well aware of the safety issues involved in driving this vehicle. However, they have chosen to ignore them. Their attorney, in a letter to the Ohio Attorney General's Office, blamed the lack of a plug in hybrid battery on supply chain issues (letter was Nov. 2022, at which time the battery was supposed to be available March 2023) and only stated that my vehicle was "drivable." Another warning message "High System Temperature; Switching to Hybrid Mode" has been occurring for a couple of years periodically. Since October 2022, the malfunction indicator lamp is always on and 99% of the time the "Check Hybrid System!" warning light also comes on after about a minute after starting the vehicle. On 3 other occasions the vehicle has entered into "limp home mode" instead of complete shutdown.

- Blue Ash, OH, USA

The check engine light started flashing Check hybrid system turn off engine massage appeared The gas pedal doesnt work and the car jumps The problem happened 4 times so far with me The same problem happened about 5 times with my uncle that drives 2016 sonata hybrid

- Anaheim, CA, USA

The vehicle has stalled in traffic numerous times since I bought it in 2016 creating a traffic safety issue. Without warning the lights on the dash will flash and the car dies. I have worried each time that traffic behind me would collide with my car. #1 1 1/2 years into ownership this occurred. They replaced part of the EV charging system that was overheating on the cars. (RECALL) # 2 1 /2 years into ownership the air-conditioner failed and the car stalled in traffic due the air-conditioner failing. (REPLACED UNDER EXTENDED WARRANTY) # 3 Last year I complained that a Hybrid Overheat Message would come on switching to EV mode and the transmission felt like it was slipping occasionally, and the battery only held 20 miles of charge, rated for 27. They refused to change the battery system under the lifetime warranty. #4 Last summer car stopped charging (REPLACED INVERETER UNDER EXTENDED WARRANTY) This month car stalled on the roadway, lights flashed on dashboard. Could have been rear-ended, Had to coast to a stop and restart the car. Took to dealer the said the replaced an EV computer for 5K (REPLACED COMPUTER UNDER EXTENDED WARRANTY) 3 days later same issue, stalled on busy street without warning. Took to dealer and the replaced the cars main battery, charging me $450 3 Days later it stalled again without warning in traffic, It's not back in the shop. THIS VEHICLE HAS MAJOR SAFETY PROBLEM. IT'S EXTREMELY DANGEROUS TO HAVE A CAR STALL IN TRAFFIC WITHOUT ANY PRE-WARNING. THE DESIGN IS DEFECTIVE. THE CARS NEED TO BE RECALLED AND BOUGHT BACK AT FULL PRICE BY THE HYUNDAI.

- Valenica, CA, USA

Electric power steering failure, have taken to the dealer and they told me I need a new battery. I bought one and the problem is still happening. Used to reset after I restart the car but now it won-??t.

- Henrico, VA, USA

I took my car to a shop due to my car having a loud knocking noise coming from the engine bay and lack of acceleration as well as the oil light flickering on and off and once the mechanic inspected my vehicle he said metal particles were being deposited into my oil due to internal engine parts. After picking my car up all the lights on the dash cut on and the car completely had no steering, no brakes, no power but the radio still worked. I barely could turn the steering wheel nor could stop the vehicle due to this and thankfully could coast into an upgrade leveled hill and stop the car. Car would barely recrank or hold power nor would go above 40 mph. Only drove 5 miles to get the car back home safely. Drove back around 3:00 a.m. so there wouldn't be much traffic out in case of something like this happening. Could've been catastrophic!

- Mooresville , NC, USA

The car lost all acceleration and my check hybrid system light came on. The car would not handle safely to drive. After 3 resets the car finally accelerated as normal. The codes clear themselves before the dealer can check them to give a specific issue. It is not giving the diagnosis for the hybrid issue in the diagnostic log.

- Spokane Valley, WA, USA

Electric power steering randomly fails while driving, causing a huge safety issue.

- Phoenix, AZ, USA

As I am driving, at random times, typically at cruising speeds of about 40 mph or less, the STEERING wheel will lock up and I will be unable to STEER the vehicle until I turn the car off and back on again. There are typically some warning lights (i-??ll try to attach the picture) that pop up and go away once the car is turned off and back on again. No dealership that I have taken it to has been able to diagnose the problem since it does not, to my disdain, occur under their watch (it is not reproduced). This issue puts both my life and EVERYONE in my proximity-??s life at risk as I have NO CONTROL of the vehicle once it locks up. At this point it has occurred for over 2 years that I have had this car. There are some warning signs right before it occurs. First, there is typically a sudden change in the resistance of the steering wheel. Particularly, it will become harder to move the steering wheel left but then turning it right will have NO resistance. As soon as this occurs I start to panic because it indicates that ANY turn at that point will lock the steering wheel. It has occurred this way every single time. Sometimes it happens in the opposite direction and the right side becomes stiff and suddenly any turn in the steering locks it up. This is VERY dangerous and can potentially kill. This model needs to be recalled!

- Saint Louis, MO, USA

my check engine light has came up already three times within each month the codes that appear is P0014 / P1326 i have changed the oil many times and it still appears now my it to the point my car can't be driven it not let me drive it only at a certain limit

- Woodbridge, VA, USA

Hybrid system failed, lost power while driving on freeway going 65 m/h during rush hours, RPM gage went down to 0, most instrument light weee lit on dashboard. Speed went all the way down to 40 m/h pressing the gas all the way down. Hybrid system warning light was flashing. Could have been hit by other vehicles on freeway I had to put my hazard flashing signal and wait for the right moment to pull my car off the road and to emergency lane to stop. The first time car was towed to dealer. And dealer was able to confirm the Problem. The spent 2 weeks at dealer until the claimed they had to contact the manufacture and ended up replacing a wire harness they thought water got into it, paid over $600 for this fix. Few months later same problem they ended replacing some sensors due to a recall. A week later happened again all 3 time on the freeway. The check engine light was on few months prior to these issue and took to dealer multiple times since was still under warranty. But the problem kept coming back. They replace fuel injector then coil pack, the 3 time I was told the engine needs to be flushed and that not covered under warranty. Not long after that the major issues with the hybrid system 3 times

- Brunswick, OH, USA

The check engine light came on and wouldn't accelerate normally. The speed was delayed and cutting back and wouldn't pass 40 mph. Upon taking it to a local shop it had to be taken to the buying location by road side assistance. After the service department checked into the problem it now needs a new engine. They stated there were metal shavings in the motor. This was transferred by a known problem in the 2.4 L motor that hyundai has put in their vehicles with problematic bearings. This happened within 2 months of buying this vehicle. We Can't drive it at all now so it's still at the shop.

- Greenwood, SC, USA