Which parts fail
Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2020 Hyundai Santa Fe owners, lightly cleaned up (personal details are redacted by NHTSA).
The vehicle seat caught fire overnight, Sept 26th, and was discovered the morning of Sept 27th 2024. The fire was contained to inside the vehicle and melted parts of the driver seat and lower part of steering wheel. The vehicle interior was covered in orange dust and had extremely toxic smell inside. Insurance 3rd party inspected and declared it a total loss. A few weeks later, a neighbor and fellow Hyundai SantaFe owner mentioned that he had heard of an issue with the Santa Fe catching fire. With this new information, I called Hyundai to alert them. Hyundai opened an investigation, but closed the claim since the 3rd party that declared it a total loss had already sold it as salvage. They also denied any recalls pertaining to my specific vehicle or knowledge that electrical fire was a potential issue for this model and year. …
The contact owns a 2020 Hyundai Santa Fe. The contact stated that the vehicle alarm system failed to activate during a vehicle break-in. The vehicle was unoccupied at the time of the failure. A police report was filed. The dealer was notified of the failure and the contact was advised to contact the insurance company and an appointment was scheduled for the vehicle to be diagnosed. The vehicle was not diagnosed. The vehicle was not repaired. The manufacturer was notified of the failure and provided case number. The failure mileage was approximately 55,000.
I went to the store, came home , parked and turned off the car. Went to go outside about 10 minutes ,maybe. Black smoke coming from right front. By the time i grabbed the keys and fire extinguisher there were flames coming from the engine compartment
On Thursday, May 11, 11:45 am, I experienced a distressing incident at Moulton Elementary School in Laguna Niguel, CA, 92677. my car was parked near the school building, with the engine turned off and the gear set to park. I was there to pick up my children, and at that time, nobody was inside the vehicle. Unexpectedly, my car started moving backward as if in neutral gear, despite being in park mode. I estimate I was approximately 10 feet from the vehicle in front of the school building. The situation was alarming because numerous children were nearby, which could have resulted in a tragedy. Thankfully, no one was injured or hit by the moving vehicle. Instinctively, I attempted to stop the car by using my entire body to push against it. Unfortunately, my efforts were unsuccessful, and as a result, I sustained severe back pain. …
The multifunction/turn signal switch in my Hyundai has failed and causes the left turn signal to operate intermittently. While driving, I am unable to reliably activate the left turn signal when making a left turn or changing lanes. The signal may fail to engage when the turn signal lever is operated, requiring repeated attempts to activate it. College Station Hyundai inspected the vehicle and diagnosed the multifunction switch as the failed component requiring replacement. The replacement component has been identified as Hyundai part number 93400-S1750. I consider this a significant safety concern because the failure prevents me from reliably signaling my intention to turn or change lanes to other motorists. The malfunction occurs during normal operation of the vehicle and creates the risk that surrounding drivers will not know that I intend to turn or change lanes. …
Numerous different occasions since I bought the vehicle this year in March 2023 when on highway, side streets and even in parking lots with nothing, no cars no objects or humans in front or behind the vehicle my forward collision warning and rear end collision warning has came on which caused the car to break on its own and it is a safety concern. I have been to the dealer numerous times since I've bought the vehicle and currently have reached out to Hyundai Motors of America and pretty much got told to suck it up nothing they can do for me as the computer isn't showing any codes or issues my car has now been at dealership where I bought it for 2 weeks now and no resolution besides come get the car and figure it out on my own and as a single mother with a child with disabilies I don't know what else to do.
2020 Hyundai Santa Fe Limited AWD, VIN [redacted] , 30,000 miles. Air conditioning fails to blow cold air; climate control displays -10 F, indicating a defective evaporator temperature sensor per Hyundai TSB 21-HV-002H (2021). Dealer diagnosed evaporator/thermostat failure, quoted $2,500, despite TSB specifying a $30-$50 sensor replacement. Vehicle is 9 months past 5-year warranty but under 60,000 miles. This known defect causes driver discomfort and potential visibility issues (fogging in humid conditions). I have dash photos and dealer quote. Request NHTSA investigate for recall due to widespread HVAC issues in Hyundai models.
Vehicle killed the battery even with new alternator and new battery. Dealership does not know why and it died while at the shop. Vehicle has extremely high oil consumption and light comes on every once in a while. Vehicle started shaking and took to two dealership. Vehicle was diagnosed with a burnt valve in cylinder one. Dealer stated they have not heard of this problem. Called Hyundai representative corporate and was told they never had this problem before and have not heard of it. Out of warranty and was informed I would have to pay for it even though it is common in these vehicles.
2020 Sante fe with 59000 miles on it. Air stops blowing cold, I look it up and there is a TSB for the Evaporator Temperature Sensor from May of 2021. This is a safety issue because if you run the air conditioning or defroster if the sensor is bad it clicks off the compressor which can affect the fan and overheat the car. I watched it happen on my car when they ran the diagnostic trying to fix it. It came up as a bad sensor, and it clicked off the compressor. The fact that a 6 year old car with 59000 miles needs work on an air conditioner is ridiculous and in this case not safe.
Back up camera glitches. Causes driver assist to take control at times when not necessary. Have has this in for service at least 4 times since purchasing vehicle in 2020. Service states repaired each time bit eventually happens again. This last time is getting more severe cause multiple electrical short in Overhead lights, Panoramic roof failure to close at times and rear hatch sometimes only partially opens. I saw recent recall for 2021 and 2022 Santa fe's, I believe this problem is what is happening with my 2020 Santa fe and the scope of the recall should be expanded.
Electrical complaints in other Santa Fe years
Frequently asked questions
How common are electrical problems on the 2020 Hyundai Santa Fe?
NHTSA has 25 complaints about the electrical system of the 2020 Hyundai Santa Fe, 12% of the model year's 217 complaints. The component named most often is instrument cluster/panel (1 mentions).
Is there a recall for 2020 Hyundai Santa Fe electrical problems?
No. NHTSA lists no electrical system recall for the 2020 Hyundai Santa Fe, though it has 2 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2020 Hyundai Santa Fe electrical problems start?
Half of the complaints with a recorded mileage happened before about 5,000 miles, and 83% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 2 fires and 1 injury to electrical system problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.