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The first-generation Hyundai Sonata, Y1, was only available in South Korea in 1985 and 1986. It was a luxury upgrade of the Hyundai Stellar that was launched in 1983. But customer reaction to both was poor, even though the Stellar was sold in some parts of the world until 1988.
The second-generation Y2, launched in 1988, was available to the North American market from 1989. And Hyundai has been upgrading it ever since, with the 2020 model introducing an eighth-generation Sonata to the U.S.
Click on other model year to view more problems: 2018 2019 2020 2022
Contents
- 1| NHTSA Complaints for the 2021 Hyundai Sonata
- 2| Most Common Problems with the 2021 Hyundai Sonata
- 3| 2021 Hyundai Sonata Visibility & Windshield Problems
- 4| 2021 Hyundai Sonata Electrical Problems
- 5| 2021 Hyundai Sonata Brake Problems
- 6| What to do if your 2021 Hyundai Sonata is a lemon? Your Lemon Rights
- 7| Complaint Data
Don’t be stuck with a lemon. You have legal rights to cash, return or buyback.
The law makes Hyundai pay legal fees.
We've fixed thousands of lemon problems. Message or call 877-795-3666 today.
NHTSA Complaints for the 2021 Hyundai Sonata
| Complaint Category | Number of Complaints |
|---|---|
| Unknown Or Other | |
| Engine | |
| Visibility/wiper | |
| Power Train | |
| Air Bags | |
| Forward Collision Avoidance: Warnings | |
| Fuel/propulsion System | |
| Electrical System | |
| Visibility:sun/moon Roof Assembly | |
| Steering |
In a recent article, Lemberg Law looked at complaints made by consumers to the United States Department of Transportation’s National Highway Traffic Safety Administration (NHTSA) about the 2020 Hyundai Sonata. These focus on engine and electrical system issues.
It comes as no surprise to see that the engine and electrical system are still feature d in NHTSA Sonata complaints a year later.
Most Common Problems with the 2021 Hyundai Sonata
So far, there are 13 complaints made by consumers to NHTSA about the 2021 Hyundai Sonata. These cover 8 components and/or systems from airbags and seats to the engine, electrical system, and visibility.
There have also been nearly double (25) the number of manufacturer communications about the car, and 2 recalls. While recalls indicate problems manufacturers will rectify at no cost, manufacturer communications are an early warning reporting system. They provide dealers with information about defects, malfunctions, failure of performance, and flaws. They also advise on what to do to solve or rectify them.
By law, manufacturers must share copies of their communications with NHTSA. It stands to reason that all these issues could result in multiple future complaints when and if owners discover these problems.
Manufacturer communications relate to 11 components and systems. Unsurprisingly, the most common are related to engine and engine cooling (8), the powertrain (6), and the electrical system (4). But we’re going to explore formal complaints here.
2021 Hyundai Sonata Visibility & Windshield Problems
There are 6 complaints related to windshield and visibility problems. One of these states the recall on the owner’s vehicle wasn’t successful. “There is still no remedy after one month.”
The recall, issued on 28 December 2021, is due to inadequate windshield bonding on as many as 26,413 Hyundai vehicles, including the Sonata. The fear is that it may detach in a crash and increase the risk of injury.
Two of the complaints relate to air or wind noise coming through the windshield when traveling over 55 mph. One complainant is convinced this problem relates to the recall. But the car’s VIN isn’t listed. “I know my windshield is defective or wasn’t properly installed.”
The other air noise complaint states there are a lot of other owners on forums complaining about the same problem.
The remainder of grievances is varied. They include a complaint that after a tiny pebble hit the windshield it spread vertically and horizontally. The complaint says that not only does it obstruct vision, but it also affects the lane assist sensor in the middle of the windshield. The dealer says the windshield must be repaired by a third party, the complaint says.
Another complaint describes how a panoramic sunroof exploded on an open highway. There was no sign of debris or stones hitting the car.
2021 Hyundai Sonata Electrical Problems
The 2 complaints relating to electrical problems tell how the dashboard lights are faulty. Both state that the problems are recurrent.
One problem affects the forward-collision warning system. “The car even braked on its own, then shut off while turning in the middle of a busy intersection. There are several reports of very similar symptoms on Edmunds, under Reviews. This car is dangerous. I have contacted Hyundai twice now.”
The second complaint describes multiple dashboard lights coming on and the brakes not responding as they should. The car has less than 4,500 miles on the clock and the owner says the “incident is terrifying and unacceptable.”
2021 Hyundai Sonata Brake Problems
In addition to the complaint above, where the brakes responded “differently,” another describes a malfunction of the parking brake.
The car was in a driveway with remote smart parking assist feature activated and the engine idling. After 6 minutes, the car began to roll forward slowly and crashed into the back of the garage wall.
What to do if your 2021 Hyundai Sonata is a lemon? Your Lemon Rights
Recurring problems may indicate you have bought a lemon. So, if you suspect you have bought a lemon, what can you do?
Lemberg Law specializes in lemon law cases and we have helped many clients resolve problems like those described above. Possible resolutions include replacement vehicles, buy-back agreements, and cash settlements
Call our Helpline and we’ll evaluate your case. The law makes Hyundai pay the legal fees in lemon law cases, so you have nothing to lose.
Complaint Data
| Category | Visibility:sun/moon Roof Assembly |
| Date | Mar 22, 2023 |
| State | FL |
| Description | The contact owned a 2021 hyundai sonata. The contact stated that while driving approximately 70 mph, the sunroof suddenly fractured. The contact stated that there was no external cause to the failure. The vehicle was taken to the dealer. The vehicle was not diagnosed nor repaired. The contact decided to trade the vehicle. The manufacturer was not made aware of the failure. The approximate failure mileage was 13,300. |
| Category | Electrical System, Steering |
| Date | Mar 14, 2023 |
| State | NY |
| Description | After 9 months of ownership, on at least five (5) instances, the car has the following things happen at the same time: 1) all warning lights on the dashboard activate, 2) the battery discharge warning light activates, a loss of power steering, no speedometer, no cameras (rear or front), no ac, and all the safety functions are disabled including but not limited to: forward collision warning, parking collision warning, automatic emergency braking, lane departure warning, rear cross traffic warning. Yes, the car is available for inspection upon request. Safety is at risk by the loss of power steering and the deactivation of all safety functions. After each instance, the car has gone back to the manufacturer's dealer for inspection, they believed it might be an electrical issue after scanning for fault codes, but after 5 times, the dealer has not yet diagnosed the issue. |
| Category | Engine |
| Date | Mar 11, 2023 |
| State | DE |
| Description | My 2021 sonata has 32,000 miles & it broke down in the middle of the road. My safety & my daughters safety were at risk. We could have been hit or killed. There were no warning lights. It had to be towed. Repair shop reports the transmission is no good. This vehicle should not have transmission issues. Hyundai will not even cover a rental car. The dealership can't even work on it for 1-2 weeks. I work & have kids. I need a vehicle. The car breaking down in the middle of the road with no warning is dangerous. |
| Category | Forward Collision Avoidance: Warnings, Fuel/propulsion System, Visibility/wiper |
| Date | Feb 27, 2023 |
| State | NV |
| Description | My car barely has 11,000 miles and just the other day it had about 20miles left of gas but as I was driving on the road it started to feel and seem like it was about to die on me, also the front wipers are not well restrained with the vehicle you can tell by the way it moves when wipers are on.... Also most of the signals be it if something is in front of me and the signal goes off but theres nothing there ... Also when im backing up sometimes the car itself will force stop as if something is in the way ... But again nothing is there at all ... It happens every few days .... I just purchased this car .. And really thinking it was worst mistake w all these issues already |
| Category | Engine And Engine Cooling:engine:oil/lubrication:sump/tank:drain Plug |
| Date | Feb 25, 2023 |
| State | CA |
| Description | Engine oil plug backed out while driving causing loss of all engine oil in the mountains. Drive time was one hour when oil lamp turned on as we reached our destination. Oil check stick had no oil on it and the whole undercarriage and rear of the car was covered in engine oil. Made an attempt to refill oil and plug fell all the way out and poured the new oil onto the ground. The oil plug is not visible or accessible due to a plastic cover on the underside of the car. The vehicle was towed to elk grove hyundai dealership for service since they were the last hands on the car for regular maintenance. It was confirmed by the dealership the oil plug backed out on it's own. My family's safety was compromised as we were driving at night in steep mountains during high traffic time. There would be nowhere to go if the engine ceased and would cause an accident on hwy 50 in california. Also a full six quarts of oil was leaking on the back roads, highway, and residential roads, and eventually in a high school parking lot was were the bulk of the oil was spilled. The is an environmental hazard at public school eldorado high school. |
| Category | Forward Collision Avoidance: Adaptive Cruise Control, Forward Collision Avoidance: Automatic Emergency Braking, Forward Collision Avoidance: Warnings |
| Date | Feb 22, 2023 |
| State | MA |
| Description | The forward collision warning, automatic emergency braking and adaptive cruise control failed as the first 2 activated when there were no oncoming collisions in front of me and the nearest cars around me were 1/4 of a mile away. The cruise control failed as it turned back on after the vehicle veered off the highway and into the rest stop. My safety and the safety of a lot of other people in the rest stop were put at risk because the system malfunction and tripped when no other cars were present that would have led to a collision. The vehicle led me off the highway into the rest stop where others could have been fatally hurt. I ended up with a shattered left foot that required a major reconstructive surgery to mend but the break will affect me the rest of my life, with more problems developing later on in life as well. No one inspected the vehicle or listened to what I had to say. No investigations were launched by insurance, the manufacturer or the police. If anything, insurance and the manufacturer seemed like they were in a hurry to dispose of the vehicle, urging me to release vehicle where it was sent to after the crash to one of insurance centers. The collision warning light came on and the vehicle responded by hard braking and veering to the right, then the cruise control turned back on and accelerated into the rest stop, first bouncing up the curb and onto the dirt, hitting a sign on the passenger side then bouncing off a tree on the driver side and finally t-boned a parked boat on a trailer head on. The vehicle was a total loss |
| Category | Electrical System:ignition:anti-theft:immobilizer/proximity:key/sender |
| Date | Jan 30, 2023 |
| State | IL |
| Description | My vehicle is trending in theft, car was leased to me from napelton in lansing il sept 2022. The first attempt of theft/break in uic area dec 10, second attempt in west chicago area jan 29. Both times I just cried and shut down. With having to contact the police awaiting the report process in middle of chicago winter left me cold and in terrible distress! This is a new vehicle for me which ultimately has caused me so much stress, anxiety, and frustration. I tried to trade it in but because of this nationwide issue that I was not aware of until the first incident! Still the theft numbers continue to rise! I am being told my cars value has depreciated from 25k to 15k which is not fair, and if I abandon this vehicle it will fall hard in my credit and ruin my chances moving forward with another vehicle!! With no where to turn and in dyer need of a reliable vehicle as I work and university student, having to constantly repair the windows after random theft attempts is a major safety hazard and for concerns of what can happen in a worst case scenario. I really need this issue to be addressed so that I can freely live my everyday life and not worry if I am leaving class or work that my car will not be there, or if my windows will be busted. I hope reaching out can help me get this vehicle traded in at a fair value! |
| Category | Structure:body, Visibility:sun/moon Roof Assembly |
| Date | Jan 25, 2023 |
| State | FL |
| Description | As I was driving down the road I heard what sounded like a gunshot and glass shattering. Upon getting to my destination I found that my panoramic sunroof had shattered outward. |
| Category | Engine |
| Date | Jan 23, 2023 |
| State | OH |
| Description | Very loud car alarms sounded, e. G., it sounded like a something like a red alert in an old star trek episode. Warning light indicated engine overheated, extreme exhaust/smoke bellowed out from rear of car while decelerating on highway exit ramp. My wife and I were inside the car during this event. This event happened on 5 pm est december 9 at hamilton avenue exit on ohio 126 cross county highway (ronald reagan highway) in the cincinnati metropolitan area. Had to park car within one mile. I had the car towed to the nearest dealer after it had cooled for 1 +hour. I was afraid the engine was going to explode or catch fire as I was decelerating. The dealer suggests the heat exchanger needed replacement. However, after 45 days, hyundai has not shipped the heat exchanger that I have been made aware. I am concerned this event may be likely to reoccur and with resulting potential injuries to the occupants inside. |
| Category | Visibility/wiper |
| Date | Dec 28, 2022 |
| State | TX |
| Description | *the front sunroof panel exploded toward while the car was running, but in the driveway in park. *our safety was compromised by the shattered tempered glass falling into the car. *the problem was noted at the dealer, who stated they had not seen this happen before and believed it to be from a rock chip. *the roof has been inspected by the service department at the dealer, and pictures taken by them and by me. It has been reported to the manufacturer. *no problems noted prior to the “explosionâ€. Sitting in my car on a cold 27f morning, I started the car and turned on the front and rear defrosters and the heater. There was a light dusting of frost on the car. About a minute after I started the car, I heard a loud bang above me. When I opened the sunroof cover to see what the noise was, tempered glass shards fell in on me. When I got out of the car to see what had happened, the roof appeared to be exploded outward in circle about 10†across, although most of the sunroof glass was “crazedâ€. The car was not moving, had not had time to get warm, inside, there was no tree or other environmental hazard close to drop on the roof. |
| Category | Forward Collision Avoidance: Warnings, Steering |
| Date | Dec 08, 2022 |
| State | NY |
| Description | I leased a 2021 sonata, and the car has been a nightmare. My car has been serviced by the dealership twice for a steering wheel that will not stop making noises. I am very concerned for my safety in this car. The wheel becomes hard to move. Also, last year, the car was in the shop for four months while the forward collision sign needed to be fixed. The car stopped twice. I am terrified to drive this car; it only has 9,200 miles. |
| Category | Power Train |
| Date | Dec 03, 2022 |
| State | TX |
| Description | Car transmission seemed to make a "clunking" sound when selecting gear from park. The car would not accelerate, the throttle seemed to be stuck and the transmission would try to downshift, but the car was not picking up speed. I eventually pulled off the road into a parking lot and turned the car off. I then restarted the car and it seemed to clear the problem, but no warning lights ever came on, and no error codes were displayed on the instrument cluster. |
| Category | Engine, Fuel/propulsion System |
| Date | Nov 10, 2022 |
| State | NH |
| Description | Oct 12: engine stalled exiting i95 in kittery maine. Engine light flashed but did not stay on. Was able to get to safe place but car would not go more than 15mph. Hampton huyndai reported mis-fire but stated it cleared on its own. Oct 17th: engine stalled on highway ramp to i495, nearly causing me to be rear ended by other vehicles. Car would not go more than 15 mph. Engine light stayed on. Towed car to key salem hyundai, defective injectors, warrantee repair. Oct 23rd: car stalls on i93, was able to take immediate exit and turn engine off. Engine light flashed but did not stay on. Took car in to salem dealership on oct 24th, no code found. Oct 25th: car stalls again on city street. Light stays on, salem dealership replaces cat. Convrtr between oct 26th through nov 4th. Nov 9th: car stalls again on city street. Light stays on, currently in salem dealership. This is a safety issue, in two cases already this car has nearly gotten me in an accident on the highway. I am seeking arbitration for replacement. I am scared to drive this vehicle. I will have a third invoice pending this next repair. |
| Category | Engine, Power Train:automatic Transmission |
| Date | Nov 04, 2022 |
| State | AR |
| Description | The contact owns a 2021 hyundai sonata. The contact stated while driving 65 mph and attempting to accelerate, the vehicle failed to respond with the check engine warning light illuminated. The contact also heard a knocking sound coming from the vehicle. The contact pulled over on the side of the road and turn off and restarted the vehicle and the vehicle started operating as designed. The vehicle was taken to the dealer and the contact was informed that the transmission and engine needed to be replaced. The manufacturer was contacted but offered no assistance. A case was filed. The failure mileage was 2,700. |
| Category | Power Train |
| Date | Oct 17, 2022 |
| State | MD |
| Description | The contact owns a 2021 hyundai sonata. The contact became aware that the vin was included in nhtsa campaign number: 22v746000 (power train); however, parts to do the recall repair were not yet available. The local dealer was contacted. The contact stated that the vehicle would delay while starting. The vehicle was taken to the dealer where it was diagnosed but no issues were found. 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 issue and informed the contact that a recall notification would be mailed to him in december. The failure mileage was approximately 15,000. Vin tool confirms parts not available. |
| Category | Power Train |
| Date | Oct 11, 2022 |
| State | FL |
| Description | The contact owns a 2021 hyundai sonata. The contact stated that while driving at an undisclosed speed, the vehicle made abnormally loud sounds. The vehicle was taken to the dealer where it was diagnosed that the transmission needed to be replaced. The dealer informed the contact that they were awaiting approval from the manufacturer to perform the repair. The vehicle was not repaired and remained at the dealer. The manufacturer was made aware of the failure. Upon investigation, the contact related the failure to manufacturer recall number: 236 (power train) included with the vin; however, he had not yet received notification. The failure mileage was approximately 28,000. |
| Category | Electrical System, Engine, Fuel/propulsion System, Air Bags, Forward Collision Avoidance: Adaptive Cruise Control, Lane Departure: Assist |
| Date | Oct 08, 2022 |
| State | NC |
| Description | Unknown |
| Category | Engine, Vehicle Speed Control |
| Date | Sep 22, 2022 |
| State | AZ |
| Description | Since we purchased this brand new vehicle, we have had in the dealership service department at a minimum of 5 times for same issue. The vehicle accelerates while stopped at a light so we have to put it in neutral to keep it from accelerating. Once we take out of neutral and release the break, the vehicle accelerates rapidly without stepping on the gas pedal. The computer system always comes on warning that we need to take to dealership because there are engine problems. Then it goes off and comes on again. We have contacted hyundai to file a complaint and it has gone no where. We have taken it to hyundai dealership in tucson and they keep replacing parts per hyundai manufacturer service tech reps. Per same egr codes. We are taking the vehicle to the dealership again today 9/22/22 because it started again around 9/1/22 and we have been waiting for a loaner car again from dealership for same problems. Meawhile, being forced to drive it due to only owning 1vehicle. Hyundai manufacturer has continued to have dealership change out parts and this keeps happening. The vehicle has just over 25k miles on it to date. The first time we had it in the dealership for this problem was on 4/6/22. We have almost rearended several vehicles and are scared to death to drive this vehicle. It is a safety hazard. We purchased the 2021 sonata vehicle brand new on 11/24/21 along with the lifetime parts and labor warranty. It had 15 miles on it. We also traded our 2018 hyundai elantra. We paid off the 2021 sonata completely in 2021. The total cost of this transaction was ,294. 74. We have also followed all the maintenance requirements. It is urgent that this complaint is investigated as soon as possible and hyundai manufacturer take responsibility now before someone gets killed. The vehicle is obviously a dangerous manufactured vehicle. |
| Category | Fuel System, Gasoline |
| Date | Sep 14, 2022 |
| State | NJ |
| Description | The contact owns a 2021 hyundai sonata. The contact stated while driving at various speeds, he smelled an abnormally strong fuel odor inside the vehicle. There were no warning lights illuminated. The vehicle was taken to the dealer who informed the contact that they could duplicate the failure. The vehicle was then taken to a second dealer, wayne hyundai parts and service (1244 nj-23, wayne, nj 07470) who could not duplicate the failure. The failure persisted. The contact stated that after driving the vehicle, his entire body had a strong fuel odor. The manufacturer was notified of the failure and referred the contact to another dealer. The vehicle was not diagnosed or repaired. The failure mileage was approximately 21,000. |
| Category | Power Train |
| Date | Jul 29, 2022 |
| State | TX |
| Description | My transmission went bad on my new car. Didn't have my car for 4 month august 12 2021 |
| Category | Visibility |
| Date | May 10, 2022 |
| State | NY |
| Description | The contact owns a 2021 hyundai sonata. The contact received notification of nhtsa campaign number: 21v00m000 (visibility) however, the part to do the recall repair was unavailable. The dealer was made aware of the issue and confirmed that parts were not yet available. The manufacturer was made aware of the issue. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact had not experienced a failure. Vin tool confirms parts not available. |
| Category | Unknown Or Other |
| Date | Apr 25, 2022 |
| State | FL |
| Description | We received a letter back in dec 2021 about a recall for our windshield that hyundai was aware of but there was no fix available. It states that if in a crash it could be real bad because the adhesive on the windshield. However I don't think it should take almost 5 months for a serious recall like this. |
| Category | Air Bags |
| Date | Mar 11, 2022 |
| State | MS |
| Description | I turned on a highway and had gotten my car up to 45 mph when a deer came out of nowhere and I slammed into it hard back on january 12th. The car only suffered cosmetic damage thankfully, but the air bags did not deploy. I have since then found out that the front air bag crash sensors are in a spot where they are practically useless unless you hit something pretty high up and destroy the headlights in the process. In my opinion, this is a serious safety issue, and when I contacted hyundai about it, all they told me was to go to the dealership for inspection. I have pictures showing that the crash sensors are located at and not where they should be, and if you open the hood, the wiring for the sensors is right in your face. I still have high anxiety knowing that if I get into another accident, they may not deploy due to their location. At least the car is still drivable and no structural damage or alignment issues are there. As you can see in the pictures the sensors are close to where the hood closes at the top support bar. |
| Category | Visibility/wiper |
| Date | Jan 30, 2022 |
| State | GA |
| Description | Recall on my vehicle states there is still no remedy after one month. |
| Category | Unknown Or Other |
| Date | Jan 20, 2022 |
| State | TX |
| Description | I have had my 2021 hyundai sonata les for less than a year and am already having problems with the front windshield. There is “air nose†coming through the windshield when I drive above 55 mph. There has been recalls for this problem on some 2020-2021 hyundai vehicles. The 2021 sonata is one of them. However, when I look up to see if there is any recalls with my vin number, it shows no recalls. I know my windshield is defective or wasn't properly installed. |
| Category | Unknown Or Other |
| Date | Jan 07, 2022 |
| State | MI |
| Description | Hello the car shut off on the freeway while driving. The display lit up light a xmas tree including the forward collision warning. I though this was an isolated incident. It has happened now numerous times. The car even braked on its own then shut off while turning in the middle of a busy intersection. There are several reports of very similar symptoms on edmonds under reviews. This car is dangerous. I have contacted hyundai twice now. |
| Category | Visibility:windshield |
| Date | Dec 28, 2021 |
| State | AZ |
| Description | The contact owns a 2021 hyundai sonata. The contact stated that while traveling at highway speeds, a tiny pebble hit his windshield which caused a minor ding on the middle of the driver's side windshield. Over time, the ding spread from the driver's side to the lane assist sensor located in the middle of the windshield. The contact stated that the crack spread vertically and horizontally across his windshield. He stated that the crack had obstructed his vision while driving at various speeds. The dealer was initially notified of the failure and informed him that he had to have the vehicle repaired by a recommended third party. The manufacturer had yet to be notified of the failure. The vehicle had yet to be repaired. The failure mileage was 23,000. |
| Category | Engine |
| Date | Dec 02, 2021 |
| State | TX |
| Description | The contact owns a 2021 hyundai sonata. The contact stated that while the vehicle was at an independent mechanic for an oil change, the mechanic diagnosed the vehicle with transmission fluid leaking from the engine. The mechanic informed the contact that the transmission fluid leakage was flammable. The dealer was made aware of the failure but informed the contact that they were backed up with other vehicles and could not diagnose the vehicle for approximately three weeks. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was opened. The failure mileage was 5,600. |
| Category | Visibility/wiper |
| Date | Oct 29, 2021 |
| State | DC |
| Description | 2021 sonata n line not equipped with auto wipers wipers intermittently come on by itself while driving. It has come on multiple times when using my turn signal. Wipes once then goes off. Has also come on once without the use of the turn signal. Swiped 3 to 4 times and then went off |
| Category | Unknown Or Other |
| Date | Oct 26, 2021 |
| State | NC |
| Description | On august 23rd, 2021, I was on a business trip between high point, nc and greenville, sc. I was operating my own vehicle as the mode of transport. Upon arrival in greenville, the car began behaving strangely. The transmission was not shifting at typical intervals, at times racing the engine at low speeds. After restarting the vehicle, there was a brief return to normal. Then the vehicle reported a "check engine" light and the transmission stopped functioning entirely. Due to capacity issues, I was unable to utilize a local dealership. I used aaa to tow the vehicle to fort mill hyundai in fort mill, sc, where it remains to this day. The vehicle threw a p0868 code, which is supposedly a generic error relating to an electrical problem in the transmission. |
| Category | Electrical System, Unknown Or Other |
| Date | Oct 12, 2021 |
| State | MD |
| Description | On wednesday, october 6th, I was driving full speed (65mph) on a major highway. Multiple lights on the dashboard came on. The lcd display screen for music, apps, etc. Went black. More lights came on and others went off on the dash display. I let off the accelerator and steered the car. The fuel efficiency was wilding jumping back and forth. Soon enough, all the lights went back off, but the mileage gauge (fuel efficiency) continued to jump wildly. The brakes seemed to respond differently- almost as if there was a delay between me pressing the brake and the brakes catching. When I needed to accelerate, the car seemed to be having trouble switching between the electric and gas motors. I was able to drive to a safe location and shut the car off. This was terrifying, as the car's computer system or electrical system clearly failed, even if temporarily. The car was taken to the dealership immediately. The car's mileage is under 4, 500 miles and was purchased in february 2021. There have been other small issues but never anything like this. The display screen has gone black before a few times, my cell phone won't connect (even manually and it's properly connected, working seamlessly other times). In those cases, I shut the care off and restarted it to fix the issue. However, this new incident is terrifying and unacceptable. Including photos taken that show impossible fuel efficiency as only evidence I could safely capture. |
| Category | Air Bags, Seats |
| Date | Oct 07, 2021 |
| State | FL |
| Description | We lease a 2021 sonata sel equipped with air bag system featuring an ocs in the right front seat. The purpose of the ocs is to disable right passenger seat front air bag when it detects ta child restraint system or small child in the right front seat. Right front air bag is disabled to prevent injuries to a child from a right front air bag inflation during a crash. My wife is about 4'10" tall and weighs 135#. When seated in passenger seat, she requires a cushion to raise her so she can see over dashboard and out side window. Our sonata is equipped with manual passenger seat that is raised to highest position. Problem is that when she uses cushion, the ocs light stays on indicating that air bags are deactivated and would not deploy in an accident which could cause an extreme safety hazard to my wife. We took car to dealer service center twice, and we called hyundai usa customer service - both said nothing could be done. Small adults like my wife should be able to bypass the ocs using a shunt or bypass switch. We feed this is a serious safety hazard. Earlier sonata models were recalled for this issue. |
| Category | Parking Brake, Unknown Or Other |
| Date | Jul 22, 2021 |
| State | FL |
| Description | The contact owns a 2021 hyundai sonata. The contact stated that after driving out of the garage and parking in the driveway with the engine idling and remote smart parking assist feature activated, 6 minutes later the vehicle suddenly began to slowly roll forward into the garage area making contact with a second vehicle that was parked in the garage before crashing into the back of the garage wall and stopping. During the incident, no injuries were reported, and no police report was filed. The vehicle was taken to the local dealer who was unable the duplicate the failure. The manufacturer was also notified of the failure. The approximate failure mileage was 1,400. |
| Category | Unknown Or Other |
| Date | Jun 07, 2021 |
| State | WA |
| Description | Excessive wind noise is coming from the driver side window when speeds are over 55mph+. A lot of other owners on the forums are experiencing the same problem. |
| Category | Unknown Or Other |
| Date | Apr 02, 2021 |
| State | FL |
| Description | Seems to be an issue with the wireless apple car play. Regardless if the vehicle is in motion or not it loses connectivity. While driving this cause you to take your eyes off the road as messages appear on their infotainment system. Calls are dropped, navigation stops so while you are looking at the messages you're not paying attention to the road. Apple is aware but has not resolved it. Hyundai is aware but have not resolved it. The internet is loaded with issues for this situation. Not sure if this is something you can assist with but I'm assuming at some point their will be accidents because when this happens you can't use the hands free option as it also stops working. |
| Category | Visibility/wiper |
| Date | Mar 26, 2021 |
| State | TX |
| Description | Panoramic sunroof explosion. Happened on open highway road with no car in near vicinity or sign of any kind of debris hitting the vehicle. |
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Brian Jones spent more than 20 years working as an ASE Certified Master Tech and Parts Specialist at multiple dealerships. Brian has become an authority in the industry, traveling across the country to consult for car dealerships and contributing his expertise as a writer for several major automotive publications. In his spare time, Brian enjoys working on pickup trucks, muscle cars, Jeeps and anything related to motorsports.
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