What 266 owners told NHTSA about the 2025 Hyundai Tucson Fuel Cell

Issue Type: Intermittent Electronic System Failure / Critical Safety Hazard Description of Incident: A severe safety-related incident occurred while driving at night on 12/29/2025, at approximately 5:48 pm. Under fully dark winter conditions in MA, while the vehicle was in motion with the headlights set to AUTO, the following events occurred: Total System Blackout: All interior and exterior lighting systems suddenly failed simultaneously, including the digital instrument cluster, infotainment display, and backlighting for all illuminated buttons and controls. The complete failure of exterior lighting and interior displays resulted in an immediate loss of forward visibility and access to critical driving information. Duration: The blackout lasted approximately two seconds before the system appeared to reboot. Recurrence: Approximately ten seconds after the first incident, the same total blackout occurred again under identical conditions. Vehicle Status: The engine remained running throughout the incidents; however, the simultaneous loss of lighting and instrumentation created an extremely high-risk driving situation. This incident constitutes a critical safety failure. The vehicle had experienced repeated electrical system failures prior to this incident, and was previously presented to the dealer on 8/7/2025 for diagnosis and repair. The dealer was unable to determine the cause of the malfunction and failed to take appropriate corrective action to address these issues: 07/13/2025: The Auto Stop function became inactive, and the vehicle failed to accelerate properly after stopping at traffic lights, creating a hazardous driving condition. 07/14/2025: The phone failed to connect to the vehicle’s infotainment system. 07/17/2025: While reversing in a parking lot, the Parking Collision Warning system failed to detect a moving vehicle behind the car. No audible or visual warning was issued, rendering the safety feature ineffective in preventing a potential collision.

NHTSA ODI 11708682

This vehicle has had numerous problems since I leased it. To summarize, at times the vehicle randomly shifts out of the ECO mode, usually into the SNOW mode. The engine has also raced, hesitated, bucked, rattled and vibrated when trying to change gears. Sometimes, these actions are subtle and sometimes they are borderline violent. This happens more frequently when the engine is cold. Additionally, the AEB system has activated a number of times while in stop and go traffic, even though the vehicle in front was moving forward. On at least 3 of these occasions, i barely avoided being rear-ended by the vehicle following me. The final issue that I have noticed is a problem with the odometer. It has appeared to work normally most of the time, but I have noticed times where I didn't think the odometer accurately reflected the distance I had traveled. I was able to synch the odometer with the trip odometer on a local road that I was quite familiar with. The trip odometer registered 1.8 miles while the odometer only registered 1 mile traveled. All of these issues happened multiple times and are intermittent. I have had the vehicle to Hyundai dealers on 5 occasions, and they claim to have not been able to duplicate any of the problems that I have been consistently logging in to a "diary" that represents a list of when I have noticed these issues. I have been in constant contact with Hyundai, but they promised to send out a factory rep, then reneged, instead relying on the local service techs. Said techs had the vehicle for nearly 2 weeks, but only drove it for 16 miles (until I called AFTER a determination was made and they hurriedly drove it an additional 22 miles to give the appearance of a more complete exam), using less than a quarter tank of gas. To me, this wasn't a thorough exam and appeared to be a cover-up to avoid having to buy back the vehicle. Note: these problems have occurred on multiple occasions, therefore the date below is the lease date.

NHTSA ODI 11706893

Approximate date 10/7/2025. Driving 20mph clear daylight sunny conditions in right lane,another vehicle in left lane put on right blinker to merge in front of me into my lane. The merging vehicle was 3 car lengths ahead and had plenty of space to merge. Merging vehicle was only half way into right lane when without touching the brakes and no warning alarm the wheels locked up completely,skidding to a complete stop,almost got rear ended. 2 days later on 10/9/2025 same weather conditions while driving on highway the traffic was stop and go,speed 40mph. A vehicle ahead of me applied their brakes,no imminent threat, I placed my foot on brake pedal as a precaution,then brakes locked up so I pumped brakes thinking what else could I do? This did nothing,brakes remained locked until vehicle stopped. Almost got rear ended again. I can’t remember if any audible alarm or dash warning. These were the only 2 incidents with braking failure. Hyundai Dealer booked appointment but they could not find any issues with the braking system on 10/2025. Mechanic could not reproduce braking issue. When I picked up vehicle I spoke to the mechanic. He said “ if the braking issue occurs again please make another appointment. The salesman who I purchased the vehicle said “shut off the warning system”. Which I declined his offer. Thank you!

NHTSA ODI 11705164

The dashboard and heads up display intermittently goes on and off. All warning lights are on when the dashboard comes back on. It goes off long enough to not know how fast you are going. Hyundai has this as a known issue for Limited trims of the Hyundai Tucson yet they only tell you to take it to the dealer for the vehicle to be fixed. Customers have taken their vehicle back to the dealership after the dealerships stated that the issue was fixed because the issue happens again a few days later. This is a safety issue that needs to be addressed.

NHTSA ODI 11705174

Component that fails & available for inspection upon request? HVAC heat exchange and faulty gas gauge. I drive from Minneapolis to Warroad, MN frequently and the floor wells has insufficient heat hence impairing use and safety in Minnesota's severe climate. I have videos on the following but I am unable to upload videos to your site: (1) when I have heat on high, full blast and to foot well ONLY, the dashboard vent is 115-143 degrees (using a digital food thermometer) and a ~60 degree difference with the footwell at 65-85 (although 85 degrees sounds warm at 1 degree outside my feet are very cold - I would be happy to have you test this with me). (2) Brand new SUV consistently 1.5 - 3 hrs to warm up. I explained to Hyundai this is NOT a software issue rather an HVAC air exchange issue. (3) The gas gauge consistently underestimates the remaining fuel available by 50% in cold weather - an issue that between Bemidji, MN and Baudette, MN (102 miles/1hr 45min) there are few gas stations. On 11/11/2025 I took the SUV to first Bloomington Hyundai - they said it is working as designed. Then 11/20/2025 to Morries Hyundai said they are aware of a similar situation with the EON. However, without an "error code" Hyundai is unwilling to fix the air exchange. Additionally, I opened case#: XXX[XXX] -68 with Hyundai corporate - additionally they are unwilling to admit fault - this vehicle should NOT be sold in Minnesota's extreme climate conditions. How was your safety of others put at risk? If I run out of gas, my passengers and I risk frost bite or fatality of hypothermia. Has the problem been reproduced or confirmed by a dealer service center? Yes. Has the vehicle or component been inspected by the manufacturer? Yes. Were there any warning messages or other symptoms of the problem prior to the failure, and when did they first appear? No warning messages have ever appeared. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11704075

Once entire display screen including entertainment display and dashboard display went black/ turned off while driving. It came back on within a few seconds. Once dashboard display (without entertainment) went black/ turned off while driving. Last a few seconds.

NHTSA ODI 11702106

In October 2025, the center display screen in my 2025 Hyundai Tucson Hybrid began shutting off repeatedly while the vehicle was in motion. The screen controls essential functions including speed information, navigation, backup camera, safety alerts, and hybrid system data. When it shuts off, all of these features become unavailable without warning. The failure is intermittent and continues to reoccur. The component involved is the center display/infotainment system and may affect related radar and safety-system warnings. The dealer stated they duplicated the issue and reported that it was repaired, but the same display failure occurred again afterward while I was driving. The vehicle is currently with the dealer and is available for inspection upon request. My safety and the safety of others is put at risk because when the screen shuts off, I lose access to critical vehicle information. This has happened at highway speeds, including one instance where the display shut off approximately eight times within 20 minutes. In addition, the radar warning system has activated when no nearby vehicles were present, creating distraction and uncertainty. The problem has been reproduced by the dealership, documented by me on video, and reported to the manufacturer. The vehicle has been inspected multiple times by an authorized Hyundai service center and reviewed by the manufacturer’s customer service department. There have been no police or insurance inspections because the defect has not resulted in a crash, though the safety risk is significant. Warning symptoms include intermittent radar system alerts appearing without surrounding traffic. These symptoms began in October 2025 and have continued even after dealer repairs. The display failure persists and the vehicle remains unsafe to operate. P.S. I cannot upload video evidence as the website would not allow me and I have to start over.

NHTSA ODI 11702037

Attention warning... If you wear glasses that transition to dark, the system shuts down the car on cruise control. Numerous warning lights and bells. Take a break warning and sounds continuously popping up on the screen. There is no way to disable the eyes forward attention system. You cannot wear sunglasses as it can't see your eyes. I use my cruise control all the time. But the system shuts it down. This happens on all 2025 Hyundai equipped with the attention system.

NHTSA ODI 11701633

The contact owns a 2025 Hyundai Tucson. The contact stated while driving 55 MPH, the instrument panel turned black. The contact pulled over to the right side of the road, turned off and restarted the vehicle, and the vehicle operated as intended. The dealer was contacted. The vehicle was taken to the dealer, where it was diagnosed, but the diagnostic information was not provided. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 2,000.

NHTSA ODI 11701319

Instrument cluster screen and HUD go entirely blank intermittently, for various lengths of time. Loss of speedometer is a safety issue. Also, have no idea of what other functions may, or may not be working. Dealer acknowledges seeing and servicing this problem for other owners. And Hyundai owners online forum report the same issue. Dealer has replacement component ordered, but not 100% sure of cause or solution. No warning whatever. First occurred shortly after purchase in July 2025, with less than 1000 miles on it.

NHTSA ODI 11700449

2 times, while driving 35-40 mph, the vehicle automatically slammed hard on brakes to full stop without any danger or other vehicle near, causing neck pain/whip lash. 3 days ago, I attempted a U-turn in busy intersection, suddenly the vehicle braked hard and came to full stop without any danger near. The dash lights lit up, the vehicle stalled. I was in middle of very busy intersection. It would not move forward. I reversed just in time to miss being slammed into by fast moving oncoming traffic.

NHTSA ODI 11699882

INTERMITTENT FLICKERING ON AND OFF OF THE CARS DIGITAL GUAGES AND HEADS UP DISPLAY. NO KNOWN CAUSE OR CORRELATION. DEALERSHIP UNABLE TO DETERMINE CAUSE.

NHTSA ODI 11699577

The FAWS Forward Assistance Warning System incorrectly identifies a "sleepy driver" and turns off Adaptive Cruise Control. FAWS has a dozen triggers that will cause this system to incorrectly alert the driver that his eyes aren't looking at the road and it turns off ACC. The FAWS has a turn off switch but it does not turn it off. So, without this safety feature of Adaptive Cruise Control, the driver just gets constant alerts to stay alert. Hyundai claims it is working "as designed" and has a suggestion to invest in specific sunglasses, or not be taller than 6'1" so the eyes can be detected, or don't wear a hat. Seriously, these are in the manual.

NHTSA ODI 11698814

All warning lights illuminate and the dashboard showing the speedometer shuts off while driving as well as the heads up display. You have no idea how fast you are going or if you are have any warning lights.

NHTSA ODI 11698281

My instrument cluster goes off/on intermittently causing a safety issue (I'm unable to see how fast I'm driving etc). The problem has happened to me everyday for the last 1.5 weeks, however the dealer has had the car for a week now and claims they can't replicate the issue to get the code to order the part (I have filed a complaint with Hyundai). I want to go on record as this is not a recall with hyundai yet, but I am aware it is a well known problem with 2025 Hyundai Tucson's according to a North America Facebook page I belong to where we discuss various topics (positive and negative) regarding our cars.

NHTSA ODI 11694812

The following problems began 5 months ago, 8 months after purchase with about 4770 mileage and current mileage of about 7623: Multiple occurrences of Check Engine light coming on, sometimes setting DTC code, but often not setting code. Multiple occurrences of Crash Warning light coming on; It may have set a code or codes, but usually not. I think neither dealer was able to reproduce these 2 intermittent problems. Engine light, so far, has not occurred since it was traced to faulty connectors. As far as I know, the Crash Warning light has not come on since the dealer reduced front camera sensitivity. Also, for the past 5 months there has been intermittent, engine miss, skipping or cut-out. As of this writing it still occurs while driving and will lurch or buck if it happens under acceleration This is not frequent, but it happens erratically and it may happen only once or a few times in one day or several days between. This has not set a DTC code as far as I know; I think the following may be related to the skipping. Once, while coming to a stop, the engine stopped or almost stopped; it bucked when it happened, but continued to run. All warning lights came on for a second or two, then went off, except 3 warning lights and the warning triangle. Although the engine was running, the tachometer and speedometer read Zero. The engine bucked as I slowly drove into a parking lot, then I restarted the engine; it seemed ok, then. About 3 weeks later, while driving at slow speed, just as I took my foot off the brake and was about to accelerate, the engine quit. When the engine quit, the audible Crash Alarm went off with a message saying the engine was not running, press the start button. I started the engine, it did not have normal power. I stopped, restarted the engine and it seemed ok. I have been to the dealer several times because of these problems; dealer is still troubleshooting the last incident. This could cause an accident, especially if it occurs at a higher speed.

NHTSA ODI 11692103

The contact owns a 2025 Hyundai Tucson. The contact stated that while driving at 40 MPH, the vehicle was swaying from side to side. The connection was not secure to the steering wheel. The contact had to correct the steering wheel. Additionally, there was static on the radio, and the screen was inoperable. The screen went from white to black. When the heat was in the off position, hot air was entering through the vents. There were fumes inside the vehicle. The Forward Collision Avoidance assist, master warning, intelligent driving assist, and forward safety warning lights were illuminated. The local dealer was contacted, who was unable to determine the cause of the failure but was able to reset the radio. The vehicle was not diagnosed or repaired. The manufacturer was contacted and determined that the vehicle failed to meet the qualification for the Lemon Law. The failure mileage was approximately 500.

NHTSA ODI 11691228

Control screen keeps going randomly blank, for different periods of time, putting the driver at risk, because the vehicle information, including speed, lights, wipers, basically everything is displayed in this screen. Sometimes the sentence NO SIGNAL shows up. I had experienced several scary situations, specially in freeways when raining, you have zero driving information. The car has been to the dealership service 4 times, with different tentatives of repair, none of which worked. The last time my car was at the dealership service for 25 days and after 2 days the problem was back, even worse. Sometimes all the lights of the control screen light up, with no reason and keep on even after the car is turned off. This is our only car and we need it, but the car is absolutely unsafe and unreliable. I refuse to leave the car for a 5th time, Hyundai has no idea what the issue is and obviously cannot fix it. The lane assist is also malfunctioning, sometimes the warning system doesn’t work properly. Twice the car emergency brakes stopped the car abruptly without a reason to do so (no risk of collision, no car or object in front ). One of those times the car behind me almost hit me, because the stop was abrupt and for no reason. I have many videos and pictures, but apparently I cannot upload the videos in this form. I have the paperwork, but Hyundai refused to refund for the vehicle. I highly recommend an investigation, Hyundai is getting away with a very serious problem and someone will get hurt as a result of these issues. Thank you for the attention.

NHTSA ODI 11690799

The contact purchased a 2025 Hyundai Tucson. The contact discovered a mileage discrepancy after purchasing the vehicle. The vehicle was a dealer sale. At the time of purchase, the vehicle mileage was 77. It was later discovered that the mileage on the Title was 143. The contact also stated that while driving at an undisclosed speed, the hazard lights and Forward Collision Avoidance warning lights unexpectedly illuminated without any vehicles nearby. The vehicle was taken to the dealer, but was not diagnosed nor repaired. The contact was informed by the dealer that the failure could not be duplicated. The manufacturer was made aware of the failure. The approximate failure mileage was 4,000.

NHTSA ODI 11690609

I was driving the vehicle at 30 MPH when the power to the instrument cluster, infotainment center and headlights went out for approximately 1-2 seconds before recovering. Engine maintained power and acceleration during this period. During blackout I was unable to view speedometer nor other instrument information.

NHTSA ODI 11686501

This vehicle is a pile of hot garbage. Front end collision system slams on the brakes when you are not even close to hitting something in front of you plus it will auto brake randomly but often. I was backing into a parking spot and someone walked in front of the car and it slammed on the brakes. Dealer says only way to fix this is to turn the entire safety system off. The coffee break warning has zero rhyme or reason and will go off 10+ times in a trip even though I am not distracted and use my turn signal changing lanes. Dealer states there is no way to turn this off. Dashboard randomly flashes and goes dark along with all lighting in and outside the vehicle. Dealer was unable to duplicate the problem and returned the car with no fix. Drove the car in the rain for the first time and dashboard came up with a ton of errors and crash detection turned off. This is new and will be taking the car in for this and is now the reason I am filing another complaint. This vehicle is NOT safe and can be very scary to drive because you don't know when it will just take over for you.

NHTSA ODI 11684220

My entire dashboard goes black and I lose all directions and functions in car. It happens when driving often. Additionally after taking to dealership, it's getting worse. Now warning lights come on and stay on such as master warning lights, batteries, power steering, etc. AC shuts off, the car misses out when driving between 25 and 30 mph. The dealership told me it's not safe to drive.

NHTSA ODI 11680436

Vehicle: 2025 Hyundai Tucson SEL Approximate Date of Incident: [XXX] Description of Problem: While driving at normal speed, the dashboard display and exterior lights suddenly turned off, then reset. The speedometer and warning lights disappeared, then reappeared after a few seconds. This has happened once and I am concerned for my safety, especially if driving at night or in traffic. This issue has been reported by several other owners online, and it appears to be a widespread electrical or software fault. I am requesting that NHTSA investigate and Hyundai issue a recall or fix. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11678968

The contact owns a 2025 Hyundai Tucson. The contact stated that while driving at an undisclosed speed, the instrument turned blank for several seconds. The contact stated that the failure had recurred several times while driving. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure, and a case was filed. The failure mileage was approximately 2,300.

NHTSA ODI 11678518

On two occasions, the dash lights kept blacking out, along with the Heads Up Display. On my way to the dealer for a maintenance appointment, all of the emergency lights came on and would not go away. After parking at the dealer service center, I told my service rep what happened, and when she restarted the vehicle, the lights were still on. I was immediately given a loaner. After making the repair, the mechanic asked to keep the vehicle to drive for a few days to make sure the problem didn't come back. I know these problems can reappear, even after they are fixed. I don't want to drive the car if the safety lights are all illuminated, but I also don't want to be stuck someplace without transportation.

NHTSA ODI 11678582