2021 Hyundai Santa Fe driver assistance problems

Filed Nov 1, 2026 · Driver assistance, Fuel system · FL

My 2021 Hyundai Santa Fe SE (VIN: [XXX]), with approximately 93,000 miles, has repeatedly experienced a dangerous loss of acceleration while driving at highway speeds of approximately 60 mph. When I press the gas pedal, the vehicle fails to accelerate, making it difficult to merge, pass, or respond safely to traffic. The vehicle does not suddenly slow down, but it will not increase speed when needed. This creates a serious safety risk to me and other motorists. The problem occurs without a check-engine light or advance warning. I have noticed abnormal behavior involving the Idle Stop & Go “A” indicator, which changes between orange and white. Coconut Creek Hyundai, an authorized Hyundai dealership, has inspected the vehicle multiple times. The dealership initially replaced the battery, then diagnosed and replaced the high-pressure fuel pump. The pump was replaced a second time due to a reported issue with the replacement. Software updates or resets were also performed. Despite these repairs, the original acceleration problem continued. The dealership has now diagnosed all four fuel injectors as severely clogged or defective and recommends replacing them. The service advisor stated in writing that the high-pressure fuel pump failure caused the injectors to fail. However, the dealership has not explained why this damage was not identified during earlier repairs or provided assurance that replacing the injectors will resolve the acceleration problem. Hyundai Motor America has been contacted regarding the repairs. The vehicle and dealership service records are available for inspection upon request. Availability of previously removed parts must be confirmed with the dealership. I request that the federal safety agency investigate this recurring highway acceleration failure as a potential vehicle safety defect. Multiple repair attempts have failed to resolve a condition that could result in a serious accident. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 26, 2026 · Driver assistance · 40,000 miles · NY

The contact owns a 2021 Hyundai Santa Fe. The contact stated that while in reverse(R), the rear-view camera displayed a distorted pixelated image on the screen. The dealer and the manufacturer were notified of the failure and stated that there were no recalls associated with the VIN. Upon investigation, the contact discovered the federal safety agency Campaign Number: 24V879000 (Back Over Prevention); however, the VIN was not included in the recall. The failure mileage was approximately 40,000.

Filed Aug 12, 2026 · Driver assistance · VA

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

Filed Jul 21, 2026 · Driver assistance · VA

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.

Filed Mar 16, 2026 · Driver assistance · 50,667 miles · NJ

The contact owns a 2021 Hyundai Santa Fe. The contact stated that the vehicle was repaired under the federal safety agency 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.

Filed Jan 14, 2026 · Brakes, Driver assistance · WV

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!

Filed Jan 2, 2026 · Driver assistance · TX

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.

Filed Aug 6, 2025 · Driver assistance · PR

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.

Filed May 27, 2025 · Driver assistance, Electrical · CA

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.

Filed Dec 30, 2024 · Driver assistance · AZ

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