2012 HYUNDAI SONATA HYBRID — Complaint #1842811
Open-data reference.
NHTSA Complaint about ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE filed September 22, 2022
NHTSA complaint #1842811 (ODI reference 11485913) concerns a 2012 HYUNDAI SONATA HYBRID and was filed on September 22, 2022. The owner reports the failure occurred on September 15, 2022. The vehicle had 130,000 miles on the odometer at the time of the incident. The report was geocoded to Virginia based on the filer's self-reported location. The affected component is categorized as engine and engine cooling:engine:engine control module (ecu/ecm):software, one of NHTSA's standardized taxonomy codes used to group defect patterns across make, model, and year.
The filer flagged the following severity indicators: crash: no, fire: no, injuries: 0, fatalities: 0. No crash, fire, or fatality was associated with this report, which places it in the early-warning stream rather than the priority-review stream. Because a VIN was supplied, this complaint is tied to a specific vehicle and not just a model-year cohort.
Individual complaints are consumer-submitted and unverified by NHTSA engineers — the agency's role at this stage is to collect, index, and make them searchable. What matters for federal action is the pattern: when many owners of the same HYUNDAI SONATA HYBRID cohort independently describe similar engine and engine cooling:engine:engine control module (ecu/ecm):software failures, defect investigators have grounds to open a PE and request manufacturer data. Related filings for the same vehicle and component appear below, and the detail page for the full 2012 HYUNDAI SONATA HYBRID shows the complete component-level complaint distribution alongside any active investigations or recalls.
Complaint Description
The contact owns a 2012 Hyundai Sonata Hybrid. The contact stated that while driving at approximately 50 MPH, the brake pedal was depressed and the vehicle began to stall. The contact stated that the accelerator pedal was then depressed but the vehicle would not accelerate as needed. The contact stated that the check engine warning light and the hybrid engine warning message was displayed and advised the driver to âSafely Stop and Do Not Driveâ the vehicle. The contact pulled over and turned off the vehicle. The vehicle was restarted and the contact parked the vehicle in a parking lot and turned off the vehicle and waited for a while. The contact then restarted the vehicle and the check engine warning light remained illuminated. The vehicle was taken to the local dealer where it was diagnosed that the engine control module (ECM) needed to be replaced. The vehicle was not repaired and remained at the dealer awaiting the parts for the repair. The manufacturer was made aware of the fa
Complaint Details
| NHTSA Complaint ID | 1842811 |
| ODI Number | 11485913 |
| Date Filed | September 22, 2022 |
| Failure Date | September 15, 2022 |
| VIN | KMHEC4A42CA |
Source: NHTSA Vehicle Complaints Database. Component taxonomy and severity codes are standardized by NHTSA Office of Defects Investigation.
Read our methodology — how this data is sourced, computed, and verified.