Owner-reported complaints naming the driver-assistance system, filed with NHTSA
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Reports naming forward-collision avoidance, lane keeping, back-over prevention, cruise control and related electronic driver-assistance systems. Every record below is an owner-reported complaint about the 2021 Hyundai Santa Fe submitted to NHTSA — not a confirmed defect, not a recall and not a manufacturer bulletin. 30 reports on file name it.
Complaints are reports submitted by owners and drivers to NHTSA. They are not verified and do not establish that a defect exists.
The 25 most recent of 30, in the owner's own words
My rear back up camera intermitting stops working. I can shift into reverse sometimes and the camera does not come on at all, other times the screen blinks and other times the screen has green lines and glitchy lines. The camera will also come on while I'm DRIVING forward
When i select (R) reverse my camera does not come on. It started as just a flashing screen, but does not come on. It has come on momentarily while I am (D)driving. it has flashed a green screen before.
My check engine light came on, and my car was also feeling "sluggish" and slow to accelerate. I scheduled a service appointment at my local dealer 4 days later. At the appointment, the technician stated everything checked out okay and the check engine light was likely an "anomaly" or "outlier" but otherwise nothing to be concerned about since everything checked out "okay" and no problems were identified during their test drive. However, that very afternoon, I was driving down the interstate, where the posted speed limit is 70mph, when my check engine light came on again and suddenly lost power, drastically reducing my speed and could not accelerate faster than 39mph. Luckily, the interstate was not busy at the time (about 10:30-11:00 a.m. Saturday morning) and there were only less than 4 cars behind me that were able to easily switch lanes and pass me. I moved over to the shoulder to a complete stop and restarted my car. My check engine light remained illuminated and was still slow to accelerate and "sluggish" but was able to (slowly) reach interstate speed (60-70mph) until I reached an acceptable exit and safely made it to my destination. I have since used roadside assistance to tow the vehicle from my home to the the same dealership for inspection and service (again).
The contact owns a 2021 Hyundai Santa Fe. The contact stated that the vehicle was repaired under NHTSA Campaign Number: 24V879000 (BACK OVER PREVENTION), but the failure occurred. The contact stated that the back over prevention camera displayed a distorted image or a black screen occasionally while the vehicle was in reverse(R). The failure obstructed the driver's visibility, which prevented the driver from safely operating the vehicle. The dealer was contacted, and the contact was informed that there was no record that the vehicle had been taken to the dealer. The contact found the paperwork provided by the dealer when the recall repair was completed. The vehicle was not taken to the dealer or an independent mechanic for the most recent failure. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was 50,667.
Was coming off an exit on the interstate and started slowing down. My brakes act like they didn’t want to work. Grinding and the pedal was twitching under my foot. The car stopped thankfully, but then all Linda of lights came on the my dash and will not go off. And 3 warning come up!
On 1/1/26 while traveling on the highway with no traffic in front of or right of my vehicle the ADAS emergency brakes applied themselves and slowed the vehicle nearly causing my vehicle to be rear ended. Vehicle is available for inspection. Faulty assistance nearly caused a rear end collision along the highway. Not aware of ADAS being tested inspected although multi-point inspection was done 10/2025. No warnings prior to incident.
For a few month now the light of ABS have been turning on. At the beginning there was no diagnosis specific, cause kept turning off. Two or three months ago again turn on and gave code of back caliper on the left and was changed. An now yesterday August 5, 2025 the diagnosis its need of change of the SBS module whole.
I am writing to formally express my deep concern and dissatisfaction with the ongoing quality and safety issues I have experienced with my 2021 Hyundai Santa Fe, which I purchased new in March 2021. Despite regular maintenance and careful ownership, this vehicle has presented a persistent pattern of failure—most notably involving the electrical systems, onboard cameras, and overall build quality. Specifically, the following issues have occurred: •The rear backup camera has intermittently failed for an extended period, frequently displaying a black screen or static lines, rendering it unusable. •The front camera system has now failed entirely, disabling several advanced safety features. A warning alert is permanently displayed on the dashboard and cannot be dismissed. •I was recently informed that repairing this front camera will cost approximately $2,400, a significant expense for a system that should not fail this early in the vehicle's life cycle. •The overall quality of the interior materials has proven to be poor, with excessive wear and inconsistent performance of various controls and features. •In general, the engine power and performance fall well below expectations, especially given Hyundai's advertised standards. These recurring issues have not only affected our driving experience but have also introduced serious safety concerns, particularly as critical systems such as cameras and driver-assist features are now non-functional. We have never experienced this extent of problems with any vehicle in our ownership history. At this point, we are extremely disappointed and frustrated, and we feel that Hyundai has failed to uphold the level of quality and reliability expected from a modern, family-oriented SUV.
I hadn't been begging Hyundai to help remove a public safety risk for years ! Today, The service lady witnessed my car have a severe safety defect. Although initially offering a rental car, ultimately denied due to my inability to provide insurance until the 1st. My insurance is valid until tomorrow. N they REFUSED to provide the rental without the insurance being dated for 4 days from today. The man in the service office asked if I needed a ride home!? Suggesting i drive the car home. Hyundai has witnessed this cars emergency parking failing, and are aware that this car has rolled out of gear TWO TIMES, W my son in it !!?? Until today, claiming unable to "duplicate" the defect. And unable to "substantiate " my claims due to not being able to duplicate the deflect. They duplicated the defect today. The car no longer has a safety system, that safely parks the car, when the door is open. The safety system fails, at more then half of the attempts,engage and the car will roll in either direction with the car door wide open The service department duplicated the defect today. They claim to have documented the defect . i would like to believe they will finally do what is right.. The realistic fact that they have chosen to disregard the safety of the community, and refuse to offer the rental car, is extremely dangerous to the community and neglectful to the laws of the Safety Act and my Consumer rights. With now, TWO (NOT AT FAULT) Rollaway accidents , insurers are refusing n to provide coverage for the vehicle. Some only offer liabilit, or want 4 xs the quoted rate. Hyundai is aware that this car is defective.. Hyundai has a recent consent order, for over 54 millionth dollars, for untimely recalls and falsafying reports to the NHSTA . They are now, as they then, are in violation of the Safety Act and the NHSTA Consent Order with Kia in the Theta II engines Class Action The purpose of the Safety Act, is to prevent serious injuries, from known defects before
The contact owns a 2021 Hyundai Santa Fe. The contact received notification of NHTSA Campaign Number: 24V879000 (BACK OVER PREVENTION); however, the part to do the recall repair was unavailable. The local dealer was contacted, and it was confirmed that the part was not yet available. 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. The contact had not experienced a failure. VIN tool confirms parts not available.
The Automatic Emergency Braking system activated without there being any vehicle in front.This was on a highway at 60 mph. It lightly braked for a couple of seconds with the warning light flashing and beeping as well.There was no prior indication prior. I will be taking vehicle to dealer.
The contact owns a 2021 Hyundai Santa Fe. The contact stated that while stopped at a traffic signal, the vehicle hesitated while depressing the accelerator pedal. The contact stated there was no warning light illuminated. The contact stated that the failure was intermittent. Additionally, the contact stated that while the vehicle was in reverse(R) the back over protection camera screen was black. The contact stated that after turning off the vehicle, the reverse image screen operated as needed. The contact had not taken the vehicle to a local dealer or independent mechanic. The vehicle was not diagnosed or repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 16,000.
April 2022 My 2020 one, Honda Santa Fe started rolling backwards in rolling to a flagpole as I was walking away from the car. I tried to to catch up with the car. It had my family inside screaming. But I was unable to stop it from slimming into the fireplace. I let Hyundaiusa know. They recommended that I take the car to the dealer. They promised to reimburse me for rental car after the diagnostic came back. they found nothing wrong with the car and never paid for the reimbursement Now September 2023. Same thing just happened again. I was in McDonald's drive through and I drop my debit card so I got out to get my debit card. I got out of the car and had to close the door and as I bend down at sensed the car start starting to pull away. The car once again started running away for me. I was outside the vehicle, but I was able to jump in the car and apply the brake before it slammed into McDonald's. I have made a police report. And I have a witness from McDonald's That saw the incident. I had already reached out to the attorney General's office About the first time the car rolled away from me in April 2022. They claim that my Hyundai found nothing wrong with the diagnostics. There was no argument I can make except for Being called a liar. The mechanic did a little demonstration showing us how the safety mechanism in the Santa Fe makes it impossible for the car to roll out of park if the doors open or. How it's impossible. Even if the door is open, it shifts back to park. If you hit the drive button with the doors open It automatically shifts to park. .. So there's supposed to be "no way. The car can shift out of park into drive or neutral." It rolled away in 2022 April, and it did it again September 2023.
Hyundai filed Recall Campaign 236 for the vehicle entering an unsafe state. On July 10th I took in our 2021 Santa Fe Limited with just over 15,000 miles, which had been operating normally with the serious safety defect and received the Remediation for this recall filed under NHTSA Recall Campaign 236. I took possession back of the vehicle and within a few miles of driving had the exact issues the recall remediation was supposed to fix, occur. I lost the ability to safely control the vehicle followed by multiple warning lights displaying and then experienced full loss of power. I could not signal or use emergency blinkers while going at speed on I-405 between mile marker 5 and mile marker 6, this placed everyone around me on the highway at risk. I am deeply concerned that the Recall Remediation for Campaign 236 may not work.
The vehicle will accelerate unexpectedly without using the accelarator. Usually this occurs when releasing the brakes and on a slight incline.. To date no injuries or damage has occurred due to this. My dealer has not reproduced this defect as far as I know. This vehicle has nor been inspected by the daeler or insurance reps to my knowlwdge. There is no prior indication that an acceleration will occur-no lights or any warnings. This issues has occurred several time within the last year.
The automatic emergency braking has engaged 6 times while backing up and there has never been anything behind the vehicle.
My transmission keeps slipping. I was on freeway this time and it slipped out of gear but it was like I pushed all the way down on pedal the RPM went way up so I had to wait until it slipped back into gear to be able to continue on down the freeway. I backed up traffic for a minute because I can't put on gas until it goes back in gear.
There were 2 instances where my vehicle stopped. Once I was driving 15mph and it said “Put car in Park”. The 2nd, I was driving 45mph and the vehicle said “Step on the Brake to start car”. I have also had 2 instances where my odometer just keeps going up and down. He 2nd instance, the car was making a ticking noise and hazard along with other lights were flashing.
On January 26th, 2023 at 9:57am the vehicle was unable to shift into reverse, drive, or neutral. The vehicle's system sent automatic messages indicating to have the transmission control system checked. We had the vehicle towed to a Hyundai dealer to be serviced. The dealership advised they performed a software update and that nothing else needed to be done. Then on January 30th, 2023 at 7:44pm the vehicle's check engine light came on and the vehicles system sent us another notification to our phone and email that there was a transmission control system issue. The vehicle shakes abruptly when accelerating after a stop. I have photos of the warning messages as well as video of the car shaking.
I was accelerating after being at a stop sign onto a major two lane road when all of the warning systems came on and the car stalled while the front of the car was partially on the major two lane road. The alarms, including the collision warning were going off, and it took me several minutes to restart the engine. I was very lucky that I was not hit by oncoming traffic. This was immediately reported to our local Hyundai dealer. They took two weeks to schedule our appointment and then told us nothing was wrong and that everything "checks out". Today, I receive the recall notice telling me the loss of power "could increase the risk of a crash" and yet they do not yet have a fix for it. This means I am paying for a car that is unsafe to use with no remedy in sight. Had this occurred on the highway, I would have been killed.
While driving the crash avoidance emergency braking came on out of nowhere, and the steering locked up. I was driving on a straight and level roadway with no vehicles in front of me when suddenly the whole dash lit up with warning lights and the car, a 2021 Hyundai Santa Fe, came to a emergency stop, the steering wheel was shaking and wouldn't turn. This was the second time this happened. The first time on 09/29/22 I called the car dealer and was told that "They knew of the problem and that there was no remedy". This is extremely dangerous, both times it happened while I was driving on a highway at a steady speed, thankfully the roadway was dry if it had been raining I would have probably crashed.
The contact owns a 2021 Hyundai Santa Fe. The contact stated that while the back-up camera was activated, the screen display turned to a green color and no image was visible, creating a visibility hazard for the driver. The contact indicated that the failure was intermittent. The vehicle was taken to the local dealer who was unable to duplicate the failure or retrieve a fault code. The vehicle was not repaired. The manufacturer was not yet notified of the failure. The failure mileage was 21,000.
Emergency braking comes on with no vehicles in front for 1/4 mile. Passenger front seat belt is no working properly. Caution Collision comes on sporadically. Clock does not show correct time. Stop-Start System works sporadically. A/C fan blows out defrost sometimes. Remote start does not always work or shuts off too soon. Case Manager does not return calls. Changed Case Manager but NO BETTER. Hyundai DOES NOT CARE.
The contact owns a 2021 Hyundai Santa Fe. The contact stated that while driving at various speeds, the vehicle would not immediately accelerate while depressing the accelerator pedal. The contact indicated that the RPM would increase however, the vehicle would hesitate to accelerate causing a safety hazard while pulling into traffic. The vehicle was taken to the local dealer who was unable to diagnose the cause of the failure. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 50.
While driving in the fast lane on the freeway at speed limit the car suddenly began to slow/stop, after which a warning flashed on the display that said Danger, collision imminent, or something like that. There was no one close in front of me when that happened. This exact scenario has happened three times now in this car, in the same way! I felt my life was endangered every time by the sudden and unnecessary braking of my car.
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.
Categories with enough reports to have a page of their own
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