2014 Hyundai Sonata problems

“Summary of Event: This vehicle was brought to an authorized Hyundai dealership for a mandatory safety recall engine replacement under the Theta II Engine Recall Campaign. The dealership successfully installed a replacement engine provided by the manufacturer. However, the dealership and Hyundai Motor America are now refusing to return the vehicle to me in a functional, safe condition. Safety Hazard & Defect: The dealership states that the replacement engine shipped by Hyundai is mechanically and physically incompatible with the vehicle's original, factory-installed high-pressure fuel pump (HPFP). In an official written correspondence from a Hyundai Motor America Corporate Case Manager, Hyundai explicitly documented that: "dealership stated that it is not safe to drive the vehicle with old fuel pump." Despite acknowledging that the vehicle is now in an "unsafe to drive" condition due to the mismatched replacement parts provided by the manufacturer, Hyundai Corporate and the dealership are refusing to complete the safety recall remedy unless I pay $1,500 out-of-pocket for a new, compatible fuel pump.”

“Odometer Fraud. The contact owns a 2014 Hyundai Sonata. The contact purchased the vehicle on April 28, 2025, with 28,974 miles from a dealer. On January 20, 2026, while attempting to start the vehicle after being parked for a while, the vehicle lost power and failed to start. The contact walked to an AutoZone nearby, where a mechanic diagnosed that the battery and starter needed to be replaced. The vehicle was repaired while with the mechanic, and the contact was informed that the actual mileage on the vehicle was 170,123. The contact reported the issue to the dealer and was informed that it would be investigated; however, the contact had not received any additional information. The dealer had taken possession of the vehicle and informed the contact that payments were still expected despite the odometer discrepancy. The manufacturer was informed of the failure and the odometer discrepancy. The failure mileage was not provided.”

“The contact owns a 2014 Hyundai Sonata. The contact stated that while driving 60 MPH, a bystander notified the contact that the brake lights were inoperable. An independent mechanic was contacted. The vehicle was taken to an independent mechanic to be diagnosed and determined that the brake light housing needed to be replaced. The brake light housing was replaced; however, the failure persisted.”

“I am submitting this complaint because I believe this issue presents a serious safety concern. My 2014 Hyundai Sonata experienced a failure related to the steering angle sensor, causing the ESC, ABS, and traction control warning lights to illuminate while driving. As a result, these important safety systems lost functionality and were no longer available to assist in maintaining vehicle stability and traction during normal driving conditions. This failure occurred without warning and required replacement of the steering angle sensor, followed by a required calibration. A critical steering-related component should not fail under normal driving conditions, especially when its failure can disable multiple electronic safety systems. Drivers may not immediately realize that these systems are no longer functioning, increasing the potential risk during emergency maneuvers, wet road conditions, or sudden avoidance situations. While researching this issue, I found that many other Hyundai owners have reported similar steering and electronic stability control problems. I respectfully request that NHTSA investigate whether steering angle sensor failures, related steering…”

“ABS module/brakes system goes into limp mode randomly, which causes brake malfunction, throwing codes c1233, c1234 and c1236. There was a recall repair performed by Hyundai about two years ago, however there was two options on NHTSA recall 23V651000/campaign 251. One was to replace a safety plug fuse issue, TSB 23-01-054H . That is the recall they performed. The other recall repair which they did not perform is to replace the ABS module. The Hyundai dealer says I must pay a $225 diagnostic fee for them established they need to do this recall repair . Does that sound correct to you?”

“My 2014 Hyundai Sonata experienced a failure of the transmission shift cable connection, the same safety-related defect addressed by Hyundai Recall Campaign 123 (NHTSA Recall 14V-434). The gear selector stopped functioning correctly. Although I could physically move the shifter using the shift-lock release, the dashboard continued displaying Neutral even when I selected Park. The vehicle would not start because it was not recognizing the correct gear position. This malfunction raises serious safety concerns because a failure of the shift cable connection can cause the transmission’s actual gear position to differ from the driver’s selected position, potentially creating an unintended vehicle movement or rollaway hazard. On September 4, 2026, Courtesy Hyundai Tampa, an authorized Hyundai dealership, inspected my vehicle and diagnosed the shift-cable connection failure, confirming the problem I had reported. Hyundai Motor America verified that Recall Campaign 123 had previously been completed on my vehicle on September 16, 2014, when it had approximately 13,000 miles. Despite that prior recall repair, the same type of failure occurred again at approximately…”