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2012 Hyundai Sonata electrical problems

235 complaints (15% of all complaints for this car). Typical mileage when it fails: 80,000. 3 crashes reported.

owner complaints
235
of this car's complaints
15%
typical mileage
80,000
crashes
3
recalls
0

Which part fails

  • Wiring
    2
  • Instrument panel: speedometer/odometer
    2
  • Wiring: connectors/plugs/receptacles
    1
  • Ignition: anti-theft: immobilizer/proximity: key/sender
    1

At what mileage

Complaints by mileage at the time of the problem.

0k-25k
25k-50k
50k-75k
75k-100k
100k-125k
125k-150k
150k-175k
175k-200k
200k+

Hyundai Sonata electrical problems in other years

19901995200020052010201520202025

Specific symptoms reported on the 2012 Hyundai Sonata electrical

Phrases found in the owners' own descriptions, so one complaint can mention several symptoms.

Fire or smoke 91Warning lights 38Battery drain 13Key fob 9

Related recalls

No recalls on record for this model year.

Related investigations

Non-crash Vehicle FiresOpened March 29, 2019, closed December 22, 2021

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). ODI also reviewed field data of other Hyundai vehicles equipped with Theta II, Gamma, Nu and Lambda engines (approximately 4.8 million). As a result of this PE, Hyundai has issued the federal safety agency Recalls 20V‑746 and 21V‑727 to address potential engine failures and fires in certain Hyundai vehicles equipped with various engine types. Additional information on these and other related recall actions is available in the downloadable version of this resume available at In addition, ODI has upgraded this PE to an Engineering Analysis (EA) 21-003 which will focus on potential recall scope concerns and recall remedy concerns related to the engine failure rewlated recalls mentioned above and conducted previously. See the EA21-003 Opening Resume available at for more information. Also available in the downloadable version of this resume is a list of the reference numbers for the 302 ODI reports, or Vehicle Owner Questionnaires (VOQs), cited above which ODI received through mid-November 2021. Note that the Manufacturer reports cited above are customer complaints received through March 2019.

PE19003

Non-crash Vehicle FiresOpened August 21, 2018, closed May 10, 2019

In a letter dated June 11, 2018, the Center for Auto Safety (CAS) petitioned the federal safety agency 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. CAS stated that there is a higher number of complaints to the federal safety agency regarding non-crash fires on these vehicles compared to other similar vehicles. The Office of Defects Investigation (ODI) had already opened Recall Queries (RQ17-003 and RQ17-004) on all Kia and Hyundai vehicles equipped with Theta II engines for engine failures that may cause stalling and fires.The queries cover most of the petition subject Optima, Sorento, Sonata, and Santa Fe vehicles but not any of the subject Soul vehicles.On August 21, 2018, ODI opened a Defect Petition (DP18-003) to evaluate whether to grant or deny the CAS petition. ODI sent Information Request letters to Kia and Hyundai (September and October 2018) requesting information on all engine and non-engine related fires in the petition vehicles.ODI performed extensive analysis on the information obtained from Kia and Hyundai. During the DP18-003 analysis, Kia and Hyundai each initiated three additional safety recalls related to engine compartment fires on certain petitioned and non-petitioned vehicles (nearly 740,000 total vehicles: Recalls 18V‑907, 18V‑934, 19V‑101, 19V‑063, 19V‑120, and 19V‑204). Based on ODI?s review of the applicable materials, including responses to Information Requests sent to multiple manufacturers, Vehicle Owner Questionnaires (VOQ), and Early Warning Data, the federal safety agency decided to grant the petition.The CAS petition was granted on March 29, 2019. Preliminary Evaluations (PE19-003 on Hyundai and PE19-004 on Kia) have been opened to assess the scope, frequency, and potential safety-related consequences of alleged defects relating to non-collision vehicle fires in the 2011-2014 Kia Optima and Sorento, 2011-2014 Hyundai Sonata and Santa Fe, and 2010-2015 Kia Soul.Attached is a list of the reference numbers for the 404 VOQs cited above.

DP18003

What 2012 Hyundai Sonata owners say

Most recent owner complaints, unedited.

Filed Oct 15, 2026 · Electrical · PA

I am reporting a total manufacturer parts shortage. My 2012 Hyundai Sonata GLS is part of the Hyundai Anti-Theft Customer Satisfaction Campaign P33 (Ignition Cylinder Protector). Hyundai launched this program to fix a massive vehicle theft vulnerability, but they have failed to release or distribute the physical parts to dealerships. I have been blocked from receiving this security fix since the campaign's rollout, leaving my car exposed to theft. I spoke today 10/15/26, with Piazza Hyundai in West Chester PA, to schedule appt, and was told this recall was launched in 12/25, and as of today, Hyundai still has not provided the parts. The P33 letter mandates that I repair the car by March 31,2027. BUT THERE ARE NO PARTS!

Filed Apr 3, 2026 · Electrical, Engine · GA · fire · 1 injury

Vehicle: 2012 Hyundai Sonata Incident Date: August 14, 2024 Location: [XXX] Description of the Problem: The vehicle experienced a sudden and catastrophic fire without warning while in normal use. There were no prior warning lights, messages, or symptoms before the incident. The failure appears to have originated from the electrical system and/or engine (exact cause UNKNOWN), which resulted in the vehicle igniting unexpectedly. Safety Risk: This failure created an immediate and life-threatening safety hazard to all occupants. The vehicle caught fire suddenly, leaving no time to react or prevent injury. There was no crash or external cause associated with this fire. The incident required emergency response from Butts County Fire and Emergency Services, who generated an official report. Injuries and Trauma: My son suffered burn injuries to his fingers, requiring emergency medical treatment. There is neurological damage to the fingertips, indicating lasting physical injury. In addition, my son experienced significant psychological trauma due to sudden exposure to a life-threatening vehicle fire, including acute emotional distress during the incident and ongoing fear associated with vehicle safety. This demonstrates the extreme danger posed by a sudden, unpreventable vehicle fire. Inspection / Confirmation: The incident was documented by Butts County Fire and Emergency Services. At this time, manufacturer inspection is UNKNOWN, dealer inspection is UNKNOWN, and insurance inspection is UNKNOWN. Warning Signs Prior to Failure: There were no warning lights, messages, or symptoms prior to the fire. The failure occurred suddenly and without notice. Defect Pattern Concern: This incident is consistent with known issues involving Hyundai Sonata vehicles, including engine and electrical system failures and reports of vehicle fires. This complaint is submitted to request a formal investigation. Prior Hyundai fire defects reported for this model. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FO

Filed Mar 23, 2026 · Electrical, Engine · GA

While I was driving my car wouldn’t go no higher than 60mph and kept dropping speed but I came to a stop and when I stopped the car was smoking. I heard knocking noise and rumbling noise on the passenger side. It wouldn’t start again

Filed Feb 24, 2026 · Electrical · 237,532 miles · AZ

Odometer Fraud. The contact purchased a 2012 Hyundai Sonata. It was discovered that there was a mileage discrepancy after the purchase. The vehicle was a private sale. The contact stated that the mileage on the title was discovered to be 98,000. At the time of purchase, the vehicle mileage was 99,000; however, a Carfax Report indicated that the mileage was 237,532.

Filed Jan 18, 2026 · Electrical, Steering · NC

Unknown, my ESP KEEPS Coming trying to see if it’s recall

Filed Nov 29, 2025 · Brakes, Electrical · FL · fire

Based on what I experienced, the fire appears to have resulted from an internal mechanical or electrical failure that occurred without warning while the vehicle was in motion. No prior issues or dashboard alerts were present at the time, and there was no external impact or damage that could explain the fire.

Filed Sep 26, 2025 · Electrical, Engine · PA

came off the highway to a stop sign went turn and the engine just seized and would not start no matter what I did. had to have it towed to my house. safety risk was just off the road so i did not get hit. police stop and told me to get a tow truck. and no warning signs at all

Filed Aug 15, 2025 · Brakes, Electrical · MO · fire · 1 injury

I was driving I seen smoke then full flames on my windshield and I tried to stop and put my car in park to get out but my brakes stopped working and I couldn’t get the gear in park so I opened the driver door and had to jump out of the car .I had an engine replacement a year before for it being recalled and police and firefighters were on scene after incident

Filed Jul 12, 2025 · Brakes, Electrical · MO

I started the car, put it into gear and then the breaks wouldn’t work. The car dash said something like check breaks hybrid system failure do not drive. There is not recall on my car but the Hyundai service department doesn’t know how to fix it. This is the second time it’s happened. I’m scared to drive it. Please investigate!

Filed Jul 11, 2025 · Airbags, Electrical · VA

On [XXX] while driving approximately 1.5 hours away from home, a warning message appeared on my dashboard stating: “Hybrid System Warning. Stop and Do Not Drive.” I immediately pulled over and contacted my insurance company, who arranged for the vehicle to be towed to the nearest authorized Hyundai dealership (Thomas Hyundai in Cumberland). The warning clearly indicated that it was not safe to continue driving. Later, I found out that the issue reported (recall 198) have presented cases ending with fire of the engine. It is critical to mention that in January 2025, I attended the official manufacturer recall for this vehicle, which was supposed to ensure safety and reliability. Despite this, the vehicle failed and left me stranded in an unsafe area. Since then, I have been without my vehicle for over three weeks. I contacted Hyundai customer care and opened a case. I was repeatedly told a case manager would call me within three business days, but I never received any follow-up until I insisted. I was eventually assigned a case manager named Snowy, and also remained in contact with the dealership. On several occasions, both Snowy and the dealership assured me that the vehicle would be ready by Thursday, July 10 and that It was not until then that I could start to request a reimbursement for my rental expenses. I repeatedly asked for confirmation because I am renting a car at my own expense in order to go to work and manage my life. However, on Thursday, July 10, I called again and was told the vehicle would instead be ready by Tuesday, July 15. Then, on Friday, July 11, I received an email stating that the engine had just arrived, and that the dealership was only now able to begin repairs. After that, and only once the car is finished, Hyundai will “review” the case and determine whether I qualify for reimbursement. This is unacceptable. I have been without a vehicle for over three weeks, forced to rent a car entirely at my own expense. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA),

Questions about the 2012 Hyundai Sonata electrical

Does the 2012 Hyundai Sonata have electrical problems?

Owners have filed 235 complaints about the electrical of the 2012 Hyundai Sonata, 15% of all its complaints.

At what mileage do 2012 Hyundai Sonata electrical problems start?

The typical (median) mileage in owner complaints is 80,000 miles.

Was there a recall on the 2012 Hyundai Sonata electrical?

There is no recall for this problem on this model year.

What year does the Hyundai Sonata have the most electrical problems?

The Hyundai Sonata model years with the most electrical complaints are 2011 (444 complaints), 2013 (261 complaints) and 2012 (235 complaints).

Other 2012 Hyundai Sonata problems

Engine 578Steering 301Airbags 170Brakes 158Lights 141Fuel system 117Transmission 97Acceleration 84Seat belts 75Driver assistance 49Body 39Suspension 36Wheels 27Visibility 22Tires 12Seats 5Locks 1

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