general problems of the 2024 Hyundai Sonata

We were backing up and leaving a parking space when the emergency braking system overrode our driving and forced a stop. This has happened many times, once while turning at a red light (which we had the right-of-way) and our car stopped on the middle of the intersection. Another time was during a turn in a non-traffic light turn lane where timing is important. Our car was again completely stopped in the middle of the road in oncoming traffic.

While driving the vehicle the other night, the cars electrical system completely shut off for a few seconds before popping back on. The whole car inside and out went completely black. It was around 10pm on a dark country road. I had the seat heater on high and the defrost on high because it was cold. It appeared to happen when the auto high beams were supposed to engage. Instead of them engaging, the whole cars electrical system just shut off. No headlights, no instruments, interior lighting, console display, nothing worked. The car was in battery mode at the time, and it sounded like the whole car just shutoff. I took my foot off the accelerator wondering what happened, and before I could understand what was going on, everything came back on. It did not prompt me to start the vehicle again. The auto on/off brights never worked like they were supposed to again either. I had to manually engage and disengage them. Thankfully it was just me on that stretch of road going 30mph at the time or it could have ended badly.

While driving the dashboard headlights and all safety systems shut off for a brief period and then reset and if driving at night this leaves you completely in the dark till the system resets. All lights exterior and interior all the safety sensors, adaptive cruise control everything shuts off. Anything tied to the electrical system shuts off. The only thing that remains running is the engine.

The exterior lights such as head lights and brake lights aswell as all interior electronics shut off at random intervals while driving posing a serious danger early in the morning and at night.

Bluelink remote start with climate control is defective. When initiated, the vehicle starts but the climate control system comes on in the off state and does not apply the saved preset, including front and rear defroster settings. This defeats the intended pre-conditioning function in winter conditions, where a remote-activated defroster is a meaningful visibility/safety feature. The defect has persisted since early December 2025 and is documented widely on Hyundai's owner forums and on reddit across multiple model lines. A recent Hyundai-issued app update removed the standalone remote stop button that owners had been using as a workaround, making the defect materially worse. Hyundai consumer affairs case #[xxx] has been opened. As of this filing, no resolution or response timeline has been provided by Hyundai. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

I was sold a 2024 Hyundai Sonata sel and while driving on the road multiple times the car completely shut off. By this all lights inside and outside the car turned off (headlights, interior lights and all) car was still rolling and I pulled over each time as all systems rebooted. It claimed that all seatbelts were off with the warning sign. Had to unbuckle and buckle all seatbelts for this warning to go away. Since the car completely shut off this put other drivers, my passengers, and myself at danger due to visibility. Luckily there was no traffic at the time but this keeps happening and it is worrying me.

Driver side window switch that controls all the windows intermittently fails to operate at times which causes the window to not open or not close back again randomly. When wanting to close any window from the drivers seat the switches don’t work causing a safety hazard in a situation where the windows would require to be rolled up or opened immediately. Issue not brought up with Hyundai or any dealer because warranty doesn’t apply to 2nd owner. No warning lamps or errors. First incident happened August 2025 and has kept on happening intermittently.

Complaint 11667442 vehicle: 2024 Hyundai Sonata mileage: 20,000 (approx. ). Update summary: this update concerns the persistent, severe electronic stability control (esc) steering malfunction previously reported. Current status of issue: the esc steering defect remains unresolved. The vehicle was taken to an authorized Hyundai dealership on July 15, 2025, for re-diagnosis. The technician reported being unable to find any fault, despite the clear, dangerous, and recurring symptoms of steering control loss and near-collisions. The vehicle is still unsafe to operate due to this unaddressed safety hazard. Manufacturer's response: during this recent service visit, Hyundai continued to refuse to provide a loaner vehicle for the diagnostic and repair period. This refusal places the driver at extreme risk due to the necessity of driving a vehicle with a known, uncorrected safety defect that has already failed a previous recall repair (performed June 6, 2025, ro 41686321 ). Impact: the vehicle's safety is severely compromised. The persistent esc defect, combined with the manufacturer's inability to diagnose/repair it and refusal to provide safe alternative transportation, necessitates immediate intervention.

The speedometer in this car is extremely inaccurate and inconsistent with its accuracy. On some occasions, the speedometer can indicate a +-2mph variance at any given speed (good), while other times, the speedometer can indicate a +-6mph variance at any given speed. (bad) the vehicles true speed was verified by gps speed data and by manually calculating given each individual wheel speed in the car. Both measured speeds confirmed that the vehicles speedometer was off by 5-6mph. No modifications performed to the car. This is a serious safety hazard as the driver is given inaccurate information regarding the actual speed of the vehicle and can lead to accidents.

When driving early in the morning while it was still dark outside, the car had what seemed to have been a sudden loss of electrical power. The audio for the radio cut off, then the screen for the radio and speedometer went blank, and the headlights also went out. This all lasted for a couple seconds when this happened and then everything came back on fine. I normally would think that this is a defective alternator which it probably is and would be covered under warranty, but after researching this problem I found out that it is a common issue with the 2024 Sonata. I feel that this warrants a safety recall which I seriously doubt will happen but it needs to. If it causes problems with headlights shutting off at night then this is a safety issue. Who knows what will happen if the headlights shut off on you at night and you couldn’t see where you were going because of it?.

I purchased this vehicle brand new off of the lot February 2024. Since then, I have had two incidents where in the middle of driving my vehicle has completely shut off. The first experience, I was driving 50+ mph. First my headlights went out, my engine shut off, my dashboard shut off, and I was cruising without power or control over my vehicle for about 5 seconds before everything turned back on. I took my car to the dealership where they “could not confirm concern” after driving around for 15 miles trying to recreate the issue. They stated no codes or issues were shown on their end and returned the car to me. 6 months later during late October, my car did the same thing. I was driving 40+ mph and my car shut off in the middle of me driving. I contacted my dealership to inform them it happened again. They told me they did not have any available appointments to bring my car in. Out of frustration I did not bring it in until a few weeks ago for a regular check up. I gave them the exact date and time that my vehicle shut off and they again could not find the issue that caused the car to turn off. I was informed by a Hyundai representative that he anticipates this issue getting worse as it happened twice in the first year of owning it. That when it happens again to get my car towed by Hyundai roadside assistance and straight to the dealership. As stated, I lose complete control of the vehicle. Luckily both instances I have been on a straight road but I have concerns that this could happen at the wrong time leaving my injured.

This has happened three or four times now while I have been driving. While driving, my electrical system will "black out"/"power down"/"shut off. " everything on my dashboard turns off/goes black. My lights turn off. It is like my car shuts down for 2-4 seconds, then turns back on and I can continue to drive. There is no warning, sound, or anything. My car will just abruptly shut off. It is random too. There is no pattern that could help me determine what could be potentially causing this issue. It just happened again last night, while I was on the highway going about 70 mph. This could not only hurt me, but other people on the road. What if the next time my car powers down for a longer period of time? who is to say what could potentially happen? I intend on scheduling an appointment with a Hyundai dealership to take a look at this issue. But I figured that because this has happened three or four times now, it will probably happen again, and other people are probably having this issue too. It could be a potential defect with the electrical system.

Hello everyone. Since I purchased the vehicle new, the hvac controls have never functioned properly. The a/c engages with the button off; this issue is only temporary solved by turning the button on and off again. The mode defaults to face and feet; this issue is only temporary solved by cycling through the modes until you reach your desired mode. Besides this being a very annoying problem, I found this to be dangerous for me because I like cool air blowing to my face, and I rarely catch this issue on time. Instead of cool air blowing to my face only as it's selected in my car, cool air is being blown to my face and feet instead. My feet get numb and my foot movements are slow when theyre too cold, and it takes a long time to warm back up. I usually pull over for a few minutes to warm my feet up to get back on the road, sometimes I'll get out of my car and walk back and forth to get the blood flow going. The dealership has inspected my vehicle twice to get it fixed under warranty, but so far their repairs have not solved the problem. In my opinion it is most likely a software bug that could be caused by a faulty module or program code, or something in the canbus system. I am almost certain that it is not a mechanical failure.

I have gone 3 times to dealer because speedometer was off. They confirmed that the speedometer was off but they couldn't do anything about it. They told me that for this car, there is no vss and the speedometer gets the speed from the navigation system. The navigation system is obviously glitching which is causing this. I am not the only person experiencing this. This has to be taken care of and taken seriously.