2021 Hyundai Santa Fe Engine Problems

While driving on Interstate 75 at 65 mph, your vehicle suddenly slowed to 40 mph and wouldn't accelerate even when pressing the gas pedal, accompanied by a burning smell. The Hyundai dealer inspected the vehicle and ran computer diagnostics but found no error codes, so they couldn't identify or repair the problem. You believe your car entered a limp-home/failsafe mode, which typically indicates a serious underlying issue that the computer hasn't flagged yet.

Your engine is misfiring, which means it's not firing on all cylinders smoothly. You might notice rough idle, hesitation when accelerating, loss of power, popping or backfiring sounds, and worse fuel economy. The Check Engine Light is on, and restarting the engine sometimes temporarily fixes the problem. The repair will likely involve diagnosing which cylinders are misfiring and replacing ignition coils, spark plugs, or fuel injectors.

The contact owns a 2021 Hyundai Santa Fe. The contact stated while driving at an undisclosed speed, the vehicle unexpectedly shifted to neutral(N). The contact pulled over to the side of the road and attempted to restart the vehicle; however, the vehicle failed to start with the check engine warning light illuminated. The vehicle was towed to a dealer and was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was opened. The failure mileage was approximately 67,000.

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.

During low speeds the car stalls out which could cause a safety issue for my family

I have been having problems with the vehicle. Apparently it has problems with the start-stop system ; the car turns off even while driving , sometimes it turns on and off by itself while driving . Took it to the dealer and unfortunately this continues to happen. It worries me because while driving on the expressway it turned off and then on by itself leaving me without control of the vehicle for a few seconds . Another incident was in a drive thru, it turned off completely ; i hit the breaks but everything got locked / hard making me hit the yellow pole of the drive thru . Very upset with this vehicle another issue is the Ac stopped working only with 26k Miles. Still waiting for the appointment it’s been 2 weeks and no one solves this issue. My lease is also over but i want to let everyone know this is not vehicle for you. I do not recommend.

The contact owns a 2021 Hyundai Santa Fe. The contact stated while driving 70 MPH, the vehicle lost motive power and stalled without warning. The vehicle was not able to restart and was towed to the dealer. The dealer stated that the engine needed to be replaced. The vehicle was repaired; however, the failure recurred two weeks later. The vehicle was towed back to the dealer where the failure was diagnosed as a computer mapping failure which was resolved by the replacement of an unknown part. The contact stated that the dealer informed her that they could not provide a detailed repair bill without contacting the manufacturer for permission to provide it to the owner. The manufacturer was notified, and a case was opened. The approximate failure mileage was 37,500.

Recall 236 -transmission problem. Manufacturer has not resolved this issue to date putting lives in danger of injury or death

This car since 6/7/22 has been plagued with issues where is starts cutting out and stalling followed by the check engine light coming on flashing. This has happened many times and just happens while driving down the road. It is a very dangerous condition as you can not predict when it's going to stall out. The car has been in the dealership 3X for this problem and spent over 40 days there. Hyundai replaced the fuel injectors claiming that was the problem. It was over 35 days to get the back ordered parts. They were replaced and the car seemed to be running OK. I drove it for about 150 miles and it ran like new. Then on 8/13/22 while driving in traffic on NH Highway US1, it started doing it again. I went into the Hyundai dealership since was right there. I brought the technician out and showing him my running car with the running car with blinking CEL. They pulled into into the shop and ran a scan on it. They said there was no active codes. I asked to leave the car with hem so it could be investigated and there response we "we don;t have a car for you until next Tuesday". I was forced to drive off in a confirmed dangerous car. I pulled out into traffic on US1 and the car immediately lost power and started cutting out and the CEL was back on and blinking. I turned around on the very next street, turned the car off and back on and the CEL cleared. I pulled back onto US 1 and the car immediately lost power and started cutting out and the CEL was back on and blinking again. This very nearly caused a 2nd accident as ad zero power to accelerate. My concern is Hyundai has no idea what the problem is. They know there is a dangerous problem. The service manager drove the car/confirmed himself there is a serious issue. My other concern is the Hyundai dealership knowingly sent me away in a car they had confirmed for themselves was unsafe nearly causing a accident on the highway. I had to speak with the General manager to get a loaner to leave my defective car.

When ISG (Idle Stop and Go) is ON, vehicle will completely turn off when pressing brake to stop. Vehicle shut off on me yesterday yielding to turn onto a busy highway. It took 5+ mins for vehicle to crank back up. Very dangerous! No warning lamps, messages, or symptoms other than vehicle completely shutting off. An appointment has been made at Hyundai dealership next month which is the first available time. Please look into this issue before someone is seriously hurt or killed!

Problem first started on 3/31/22, car starting showing engine light as well as forward safety system off. Car would not accelerate and was shaking spuddering when foot was off the brake. Pulled into a safe location and called Towne Hyundai Genesis of Denville (Rt. 10, NJ) to schedule a service appointment and was told that there were NO appointments or availability until May. I expressed my concern that I did not feel safe driving the vehicle and the response was that I could drop off the car for 4-6 weeks and they would look at it when they had a chance. I asked if there was a loaner car available and they said no that 100's of other people have problems. I took my car to a local shop to see if they could diagnose the issue and they ran a diagnostic test and the error P2127 (Throttle/ Pedal Position Sensor/ Switch E Circuit Low). The Hyundai BlueLink shows 2 alerts for Chassis on 3/31/22 as well. After this date I felt unsafe driving my car and have drove the vehicle a handful of times in 2 1/2 months unable to get an appointment. The alert would come on as soon as you turned the vehicle on until 6/4/22 when it occured while driving on a highway and the car stopped accelerating. I took the vehicle to Hyundai and they updated the system and stated that it was fixed. Within 15 minutes of driving it the issue came back, and I called them and they once again stated that I could leave it there for 4-6 weeks without a loaner. This car is extremely unsafe as it will just stop accelerating without any warning.

My Santa Fe has less than 14k miles. In many instances, the car has stalled when turning on. The engine would tremble and then shut the engine off while the dash lighting/symbols stay on. It will idle for a quick second and then drop to zero. Another instance is when driving into a parking spot and driveway and we applied the brakes. At that moment the engine shut off while the dash lights/radio and everything else stayed on. In all instances, if we apply the brake and then hit the start button, the car will typically turn on and act like nothing ever happened. In 2 instances, the blind side detection would turn off while driving and all the warning lights would come on the dash. After turning it off and letting it sit for a few minutes it would disappear. One time the front detection would go off and there was no car in front of me for about 8ft. The beeping continued after we drove off and it eventually reset itself and never happened again. I’ve notified the Hyundai dealer but they claim if they can’t recreate it then they can’t fix anything. My previous Santa Fe did the same thing and they had it for 2 weeks with no results. Although my blue link app showed the car was never moved from the parking spot which made me wonder if they even tried anything. I have videos of the Santa Fe stalling.

It's only been less than a month, since I bought this car and I've driven ~500 miles. Now when I was driving the car yesterday it just stopped in the middle of the road all of a sudden for no reason. After getting the car towed to the service center, they are reporting that there is an issue with the car's transmission and they are going to replace it.