2012 Hyundai Elantra electrical system problems
126 owner complaints filed with NHTSA name the electrical system on the 2012 Hyundai Elantra — 19% of all complaints for this model year.
What owners report
“Apparently a VERY common crankshaft angle sensor malfunction caused the engine to stall out at a stoplight, putting me in harm's way”
filed Jul 14, 2026
“The contact owns a 2012 Hyundai Elantra. The contact stated that while driving at an undisclosed speed, the instrument panel became inoperable and failed to operate as needed. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and a complaint was filed. The…”
filed Jan 28, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
In response to this trend, we engineered a software upgrade that addresses the social media theft method and made it available to owners of eligible models free of charge at authorized Hyundai dealers since early 2023…
P33 OL · Other · issued Dec 19, 2025Upon customer's request ONLY, the Technical Service Bulletin (TSB) 25-01-089H provides the service procedure for installation of a key cylinder reinforcement protector assembly and two anti-theft decals on the front…
25-01-089H DCS · Other · issued Dec 15, 2025In addition to the Anti-Theft software provided under Service Campaign 993 (TSB 24-01-009H-1), a zinc reinforced ignition cylinder protector hardware upgrade is being made available to customers upon request. This…
25-01-089H DN · Other · issued Dec 15, 2025This bulletin provides the service procedure for installation of a key cylinder reinforcement protector assembly and two anti-theft decals on the front windows.
25-01-089H TSB · Other · issued Dec 15, 2025A class settlement against Hyundai Motor America (“HMA”) that had alleged that certain 2011 – 2022 model year Hyundai vehicles that were not equipped with an engine immobilizer (called the “Class Vehicles”) contain…
24-01-009H-1 · Service Campaign · issued May 10, 2024
Electrical System problems in other Elantra years
| Year | Reports | Share |
|---|---|---|
| 2025 Elantra | 1 | 5% |
| 2024 Elantra | 15 | 29% |
| 2023 Elantra | 22 | 24% |
| 2022 Elantra | 18 | 19% |
| 2021 Elantra | 29 | 23% |
| 2020 Elantra | 25 | 10% |
| 2019 Elantra | 37 | 15% |
| 2018 Elantra | 43 | 15% |
| 2017 Elantra | 111 | 15% |
| 2016 Elantra | 22 | 8% |
| 2015 Elantra | 23 | 9% |
| 2014 Elantra | 46 | 12% |
Other reported problem areas on the 2012 Hyundai Elantra
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.