2012 Hyundai Sonata — Known Issues & Recalls

While driving, your engine suddenly malfunctioned and entered limp mode, causing a loss of power and loud knocking noise from the engine. This happened without warning and created a safety risk because you couldn't accelerate properly in traffic, increasing the risk of being rear-ended. The dealership has confirmed the issue during inspection and suspects an internal engine failure. Depending on the diagnosis, the repair may involve engine component replacement or a full engine rebuild.

Your 2012 Hyundai Sonata caught fire while you were driving and making a U-turn, with both the regular brakes and emergency brake becoming inoperable at the same time. The seatbelt also stopped working during the incident. You were forced to jump out of the window to escape, and the vehicle subsequently exploded. The fire department had to extinguish the fire, and you sustained a leg injury. This type of sudden engine fire with simultaneous brake failure suggests a serious electrical or fuel system issue that will require a complete diagnostic inspection and likely engine replacement or major fuel system repair.

Your engine experienced a complete internal failure, losing power unexpectedly while driving and becoming undriveable — a situation that could have caused a crash in traffic. The dealership confirmed extremely low compression in all cylinders (35–45 PSI) and found severe internal damage consistent with known issues in your Theta II engine. The repair will likely require a complete engine replacement or major internal rebuild including new pistons, rod bearings, and related components.

Your engine suddenly shut off and stopped working while driving on a main street, leaving your car unable to restart in an unsafe situation. The vehicle was towed and inspected, and it was determined that your engine is failing. You've researched and found that these engines have had previous recalls, and your maintenance records show the car received routine oil changes as needed.

Your engine seized while driving on the highway. The service department refused to honor a recall, claiming there were signs of engine tampering or modified parts, but couldn't identify which specific parts or provide any documentation to support this claim. The repair will likely involve engine inspection, possible replacement of seized components, or a full engine replacement depending on the extent of the damage.

Your airbag warning light came on, and the dealer found that your driver's airbag module has high resistance and is leaking liquid into the clock spring connector. The technician warned that the airbag could deploy unexpectedly while driving. The dealer disabled the airbag and quoted $1,588 to replace the airbag module and clock spring together.

Your airbag warning light is illuminated on your dashboard, even though your airbags have never deployed. This indicates a potential issue with your airbag system that needs professional diagnosis. A technician will need to scan your vehicle's computer to identify the specific problem and determine what repair is needed.

Your car's battery won't hold a charge—it needs to be recharged the next day even though the vehicle isn't being driven regularly. Additionally, there's a crack in the passenger side dashboard near the airbag. The battery issue may need a new battery or alternator, and the dashboard crack may require replacement or repair of the dashboard panel.

Your dashboard has developed severe cracks that don't appear to be from normal wear and tear. This is primarily a cosmetic issue, though cracks could potentially affect dashboard functionality or allow moisture intrusion over time. The dashboard panel would likely need to be replaced or repaired with a professional dashboard restoration service.

Your car's speed was limited to 60 mph and kept slowing down while driving. When you stopped, you noticed smoke coming from the engine and heard knocking and rumbling noises from the passenger side. After stopping, the car wouldn't start again. This likely involves a combination of engine and electrical system issues that need professional diagnosis.

After your engine was replaced under a Hyundai recall, your car immediately started shaking while driving, smells like something is burning, and the air conditioning stopped working — none of which happened before the repair. You're concerned about a possible improper engine installation and the risk of fire or mechanical failure. The dealership has declined to inspect the issue promptly or provide a loaner vehicle while they investigate. The fix will likely involve the dealership inspecting the engine installation, checking fluid levels and connections, and potentially reinstalling or adjusting components that may have been damaged during the replacement.

Your vehicle caught fire while driving without any warning signs or dashboard alerts beforehand. The fire appears to have started from an internal mechanical or electrical failure rather than external damage or impact. The fire involved the steering, electrical system, and brake components. Repairs will require a full diagnostic inspection and replacement of the affected mechanical or electrical components.

Your 2012 Hyundai Sonata's engine completely failed at 241,433 miles. The failure appears related to premature bearing wear from manufacturing defects covered under Hyundai recalls 15V568000 and 17V226000, and your vehicle previously failed a bearing clearance test. Hyundai has refused to replace the engine, claiming the issue is unrelated to the recall, which you believe contradicts their own recall documentation and dealer findings. Engine replacement or bearing repair may be required to resolve this issue.

Your car's front hood paint is chipping and peeling. Your seat belt doesn't fasten reliably every time you try to use it, which is a safety concern. Additionally, your headlights and interior lights appear dimmer than normal. These issues will likely require repainting the hood, inspection and possible replacement of the seat belt mechanism, and diagnosis of the electrical system for the lighting problem.

You purchased a 2012 Hyundai Sonata and discovered a mileage discrepancy after buying it. The title showed 98,000 miles, the odometer showed 99,000 miles at purchase, but a Carfax report indicated the actual mileage was 237,532 miles. This suggests the odometer may have been tampered with or rolled back. You may need to have the instrument cluster inspected by a technician to determine if the odometer has been fraudulently altered.

While driving at 70 MPH, your brake warning light came on along with a hybrid system warning message, and your car entered limp mode (reduced power mode). You had the hydraulic brake control module (HECU/ABS) replaced, but the same problem returned about 30,000 miles later. This suggests the repair may not have fully resolved the underlying issue.

Your engine is burning through oil much faster than normal, requiring a refill every 3-4 weeks even though your oil warning light isn't coming on. When you take your car in for service, mechanics find the oil reservoir completely empty and need to top it off. This excessive oil consumption likely means oil is leaking or burning inside the engine.

You've noticed a 12-inch crack on the passenger side dashboard. This crack could potentially interfere with airbag deployment in a crash. The dashboard may need to be repaired or replaced to ensure the airbag system functions properly.

You've noticed a crack appearing on your passenger dashboard and are concerned it may be related to the airbag system, especially since your previous Hyundai of the same year deployed its airbag during an accident that didn't seem to warrant deployment. You're worried the dashboard crack poses a safety risk and want to know if Hyundai can repair it rather than requiring a full replacement. Diagnosis and repair would likely involve a Hyundai technician inspecting the dashboard for structural integrity and examining the airbag system for any defects.

Your ESP (Electronic Stability Program) light keeps coming on. You're trying to determine if there's a recall for this issue. The light may indicate a problem with your vehicle's electronic stability control system.