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 2012 Hyundai Santa Fe owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2012 Hyundai Santa Fe. The contact stated that upon exiting the vehicle, all four doors and tailgate would lock independently. The contact stated that over some time, all four doors failed to unlock while outside the vehicle with the key fob. The contact was only able to unlock the driver's side door with the key. The contact had initially taken the vehicle to a dealer where she was informed that the door actuator needed to be replaced; however, after the repair, the failure persisted. The contact then took the vehicle to an independent mechanic where it remained in their possession. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was approximately 84,000.
The contact owns a 2012 Hyundai Santa Fe. The contact stated that the vehicle was experiencing electrical failures. The contact stated that the 12 Volts battery was replaced several times. Additionally, the contact stated the battery terminals were corroded only few weeks after the battery replacement. The vehicle was taken to several independent mechanics, where the cause of the battery failures could not be determined. The battery was replaced; however the failure persisted. The vehicle was not repaired. No further information was provided. The manufacturer was not notified of the failure. The failure mileage was approximately 45,000.
I bought the car used and initially didn't have any issues with it. About a year into having the vehicle I saw that the battery light came on momentarily and then went off. Not noticing anything different with car I thought it was no issue initially. Got the car checked battery checked out after I noticed it happen a few more times but the battery passed testing. Eventually the right headlight stopped working. Thinking it was just an issue with the light I attempted to replace it but the light never came back on. Then the left turn signal stopped working. Got the car checked out and was told that the issue was more than likely an issue with the wiring, either a short or potentially burned wire. Took the car to my local dealer and was told the the headlight assembly was the issue and that it would about 1400 to 1500 dollars to replace. …
Per the mandated law in September of 2001 all vehicles sold in the United States are required to have a trunk release on the inside. The 2012 Hyundai Santa Fe does not. The 2012 Hyundai Santa Fe small SUV are very known for the lights to go out due to condensation in the tail lights. So needless to say it was built poorly as an owner like myself has to constantly change the tail lights or be rear-ended because I have NO brake lights. To me this is a serious issue. One that Hyundai has failed to correct. However, I recently took my vehicle in to be serviced and to have the tails lights changed. The dealership Lithia Hyundai of Alaska informed me they could not do them because I had to much water in the tail light cover and that they couldn't get into the trunk due to my junction box having failure. …
Engine will RANDOMLY CUT OFF AND IT WOULD DO THAT EVEN WHEN IN DRIVE LIKE IT WASNT GETTING GAS. The dash board would light then continue going WOULD START RIGHT BACK AWAY AND HAS DONE THAT EVER SINCE.i purchased it I ALSO HAD THE O2 CENSOR REPLACED AS WELL. THE TIRES ARE AWFUL THE SUSPENSION. Electrical Problems I have to hit my headlight to come on before I leave when it's dark. Sometimes when I first start driving it pulls me to the right not like wheel balancing . But pulld then back to driving . One last thing I went in for recall update or something. The mechanic say hell do the update and drive the car if it has a problem going in drive they had to replace a sensor or something my car wouldn't move they were going to fix it and give me a loaner car . The guy said let me try something he did then the car started to drive. They were supposed to replace something and didn't. …
Windows issues multiple times. The first time the driver side front window would occasionally go up then automatically down when I tried to raise the window. Likewise when I tried to open the window it would go up and down. Dealer couldn't identify a problem since it was occasionally an issue. Then when it finally no longer worked at all it was repaired. Now the driver side window has malfunctioned for the second time with no warning stuck in the closed position. I also had the driver side rear window malfunction. The window just dropped down into the door without warning and without trying to operate it at all. The dealer fixed the first two instances but not the third. I'm guessing it may have been covered under the 10 yr warranty in the past. My fault I guess I should have brought my car to the dealer in 2020 when it happened. (COVID and other reasons)
In November 2024, my car engine failed. I came out of a store, turned key, all the dash lights lit up, and loud clanging but unable to drive. Car towed several times and told by 2-3 places the engine was "out" and there was a Hyundai recall aon 2012 Santa Fe. A Hyundai dealer had my vehicle, contacted Hyundai and was told it "wasn't in recall." Had to pay repair entirely myself on disability income. The vehicle subsequent to this had electrical problems and the car shut off while driving countless times, even highway doing 65-70. Paid for alternator twice and new battery, two battery jump boxes, and car continues to have severe electrical issues and highly unsafe to drive. I am broke and facing losing the car altogether and suffered lack of housing for 2 months and inability to pay my bills. All invoices are not included with this complaint.
when a bluetooth device is plugged into the available plug(auxillary plug) in the front dash of the vehicle the radio/CD/phone connections work on and off(mostly off) if lucky you might hear the stereo for a few minutes then it goes off again for days. when unplugged the radio keeps working. My drivers side power window has not worked a few times. The available connection for the cell phone does not work all the time. There is some kind of electrical problem in my vehicle. These ongoing problems have been going on for about 1 1/2 years after I bought the vehicle.
My car died after an engine recall and then another recall happened unknown at this time and today the car died again in the middle of driving. Lights flashing on dashboard and had to be towed into Holler Hyundai Winter Park for the 17th time. This car was purchased November 2021 and I have had nothing but PROBLEMS. My safety has always been put at risk Ever since it blew up going down the highway and liquid bursted out of the hood. Now today without warning it completely died.
Purchased this used 2012 Santa Fe directly from Hyundai last January (2023) We have had to continually fill it up with oil. Two months ago, driving to work and the car stops accelerating and felt like the "power was going out". I was on a busy highway early in the morning when it died on me. Took it to a nearby mechanic and it threw engine failure pins. There was no oil so we added more oil and it drives but will not exceed 50 mph and goes out at any given time.
NHTSA investigations
Non-crash Vehicle Fires
During this Preliminary Evaluation (PE), the Office of Defects Investigation (ODI) assessed the scope, frequency and potential safety-related consequences of non-crash vehicle fires caused by both engine failures and failures of other vehicle systems/components in model year (MY) 2011-2014 Hyundai Sonata and Santa Fe vehicles equipped with Theta II and Lambda II engines (approximately 1.3 million vehicles).
Non-crash Vehicle Fires
In a letter dated June 11, 2018, the Center for Auto Safety (CAS) petitioned the National Highway Traffic Safety Administration (NHTSA) to initiate a safety defect investigation into non-collision related fires on model year (MY) 2011-2014 Kia Optima and Sorento, and Hyundai Sonata and Santa Fe vehicles. In a letter dated July 24, 2018, CAS requested that MY 2010-2015 Kia Soul vehicles be added to the petition.
Electrical complaints in other Santa Fe years
Frequently asked questions
How common are electrical problems on the 2012 Hyundai Santa Fe?
NHTSA has 43 complaints about the electrical system of the 2012 Hyundai Santa Fe, 12% of the model year's 354 complaints. The component named most often is starter assembly (1 mentions).
Is there a recall for 2012 Hyundai Santa Fe electrical problems?
No. NHTSA lists no electrical system recall for the 2012 Hyundai Santa Fe, though it has 1 recall 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 2012 Hyundai Santa Fe electrical problems start?
Half of the complaints with a recorded mileage happened before about 60,000 miles, and 27% before 25,000 miles.
Is it dangerous?
Owners linked 3 crashes, 3 fires and 2 injuries 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.