2025 HYUNDAI SANTA FE HYBRID Vehicle Speed Control Problems

Sitting at stoplight and attempted to go. Car wouldn’t go above 10mph even with pedal all the way down. Drove for a bit trying to figure out what was wrong. Then flashing red lights and beeping telling me to pull over safely. Pulled over and turned the car off. Restarted and car said charge battery. Apparently this is called “limp mode” and happens when there is something seriously wrong with the car in order to prevent further damage. Very dangerous to not be able to go about 10mph on the highway. Took to dealership. Vehicle isn’t throwing any codes and blue link shows nothing of the incident. Dealership supposedly checked battery and connections. Nothing done

I was stopped at a red light. When the light turned green, I proceeded to apply the gas and accelerate. I quickly noticed that the vehicle began accelerating at a faster rate than I was intending. The vehicle continued to accelerate without me applying my foot to the gas pedal. Nothing would stop the continued acceleration (application of brake). I crashed into the rear of a vehicle in my lane going approximately 50-60mph (estimate). I am unsure what the issue was that resulted in this crash. In doing some internet searching, it seems it could have something to do with the transition from electric to gas when I was stopped temporarily at the intersection. It could have been a faulty sensor (throttle position) or software glitch. These components have not been inspected by the manufacturer, police, or insurance representatives. There were no warning lamps, messages or other symptoms of the problem prior to the failure. The crash resulted in the airbags being deployed, I was taken to the hospital with a likely concussion and moderate injuries to my chest and hand. The vehicle that I rear ended was a [XXX] woman with a [XXX] old in the vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Description of the Problem: I own a 2025 Hyundai Santa Fe Hybrid Limited with approximately 3 months of use. While driving on highway, the vehicle suddenly stalled displaying “Hybrid System Failure-Stop by side”. I had to stop on shoulder and restart, drove it couple of days and it happened again. Engine would not start, leaving the vehicle stuck in EV mode only with no ability to accelerate properly, Vehicle wouldnt go beyond 35mph. The vehicle then stalled and became unsafe to operate on a public road. After restarting, the vehicle displayed a Check Engine Light. Tookk it to the dealer and the dealer reported DTC P1122000, but did not provide clear evidence of an internal system fault. The dealer claimed the event was caused by “20% ethanol in the fuel,” which is inconsistent with U.S. pump labeling laws. When I checked my credit card entries around the time for refuel, all of them are reputed gas stations with nothing lower than "87" gas which is in alignment with car manufacturer's recommendation. This sudden stall created a serious safety hazard, and I am concerned this may be a broader issue with the 2025 Hyundai Santa Fe Hybrid drivetrain, fuel system sensors, or hybrid control module. I am requesting NHTSA to look into whether similar complaints exist, as this failure mode can result in loss of propulsion at speed, putting occupants at risk.

My wife was parking our vehicle near the front of our home, simply rolling forward toward the car in front of her to complete parking on the left side of the street when the vehicle unexpectedly accelerated on its own. The vehicle turned hard to the right, struck the bumper of the parked car she was pulling up behind, continued right across the traffic lane where it hit two parked cars on the other side of the street with significant impact, lifting and turning one onto the sidewalk, at which point our vehicle went across the sidewalk and stopped after hitting a fence. The forward collision avoidance that we have experienced engaging previously, never engaged, despite hitting multiple vehicles on the lefft side and then right side of the street. The collision avaoidance alarms that we have experienced sounding previously, also never went off. The airbags never deployed, despite hitting 3 cars at two different sides of the street, as well as an iron fence that never moved. The vehicle went from traveling less than 5 mph while completing the last few feet of parking to a high rate of acceleration within a path of less than 40 feet, as evidenced by the significant damage it left. Had my wife not come to a stop as quickly as she did, she could have been seriously injured. If anyone had been on the sidewalk - there are 3 shcools on this block that children are often present - someone could have been killed. The vehicle is currently at a body shop being evaluated by insurance adjuster and likely a total loss. We reported tot the manufacturer and they intend to repsond to us by 9/16 and inspect the vehicle in its current state.

I purchased a new 2025MY Hyundai Santafe Hybrid. Since the day of my purchase there has been a constant error message that is displayed on dash saying "Driver attention warning system failure". this light stays on constantly and disables cruise control and adapative cruise system. This affects the usability of the vehicles. WHen asked Hyundai they say, drivers arent expected to wear sunglass if this system has to work properly, they even say constant blinking will cause system to fail and disable cruise control. This is a serious concern. How can people drive a car without blinking and how can a new car have disabled cruise control all the time.

Hyundai disabling critical vehicle safety systems if people wear sunglasses. I brought MY2025 hyundai santafe hybrid, this has driver attention monitoring system. Since the day i brought this vehicle i have been getting issues related to driver attention warning system. This error is being caused for no reason, this comes on when vehicle comes on and stays on (sometimes for days sometimes for weeks and sometimes for hours). HYundai says this issue is because i have a dash cam in car, error wont go away even when dash cam is removed. Recently hyundai engineers said its because you may be wearing sunglasses. What? Wearing sunglasses will disable AEB and cruise control !!!OMG. I removed sunglasses and tried still wont work. Hyundai sent me list of things not to do, including not to laugh, not to shorten your eyes and not to wink. this is a major safety concern, not allowing drivers to wear sunglass which will disable safety critical systems.

Hyundai's Forward Attention Warning is so aggressively annoying it makes me want to drive off a cliff to shut it up. Driving with an arm in the 12 o'clock position? "BEEP! Keep your eyes on the road!" Polarized sunglasses? "BEEP! I can't see your eyes!" Oh, there's a setting! Let's turn it off..."BEEEEEP! WHERE ARE YOUR EYES!". I just purchased and cannot use Cruise control I need to wear glasses It has a hard time seeing my eyes I cannot turn off I have tried many positions on steering wheel to no avail.

Check emergency, stopping function alert. Check hybrid system stop safely. Both alerts came on the dash the steering wheel vibrated 11 other alerts popped up in the car steered me to the side of the road. It would not start again and This has happened four times in the 7 months I’ve had the car Hyundai cannot figure out what the issue is. In fact they tell me there is no issue because it’s not happening to them while it’s been there for almost a month.

The cruise control system cuts of with message on screen stating that , system camera can’t see my face and the system de-activates. This is especially dangerous at highway speeds. The vehicle behind me doesn’t see a brake light as my vehicle suddenly looses speed. This is from Hyundais Driver Attention Warning (DAW) function. This function cannot be de-activated by myself or my dealership which is Webb Hyundai of Merrillville Indiana.

I was on a semi residential-commercial street that turns on to a freeway entrance. I was turning right and unavoidably entered the freeway when the sudden loss of power occurred. The car slowed down to about 20 mph and pressing on the gas medal didn't yield any more power. I immediately pulled over to the emergency lane upon entering freeway to let fast moving vehicles pass me on the left side. I turned off the vehicle and turned it back on. It seemed to turn on as normal so I proceeded to drive home slowly, staying on the slow right lane of the freeway driving under the speed limit until I took my exit to get to my home. All seemed ok until I turned onto residential street near my home. Again the car slowed down suddenly to 20mph and giving it more gas did not make a difference. The time difference between the first and second (recorded) incident was 25 minutes apart, having driven the vehicle only 140 total miles. The dashboard flashed a 20mph speed limit even though I never set those parameters, didn't set cruise control, and I didn't have auto stop or hold buttons engaged. The car simply slowed down to a 20mph speed limit without my input to the vehicle settings.

The driver assist program will not work if the driver is wearing sunglasses. If you are using driver assist, which includes cruise control, and are wearing sunglasses, the vehicle gives a driver attention warning. The vehicle will them cut off the cruise control causing the vehicle to rapidly drop its speed. This is incredibly dangerous at highway speeds way speeds. Hyundai and its dealerships are aware of this issue but have not offered a solution. Also you cannot disable the driver camera that cause the driver attention warning. We have also had this occur while driving at night without sunglasses. My understanding is that this issue is across all model lines.

The contact owns a 2025 Hyundai Santa Fe. The contact stated that while driving 55 MPH, the Forward Collision Avoidance Warning Alert System Failed to operate as needed. The contact stated that the vehicle independently accelerated, and the contact depressed the brake pedal and the vehicle responded as needed. The vehicle was not taken to an independent mechanic or dealer to be diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 133,000.

Mileage: 133,000