2020 Hyundai Elantra electrical system problems
27 owner complaints filed with NHTSA name the electrical system on the 2020 Hyundai Elantra — 11% of all complaints for this model year.
What owners report
“2020 HYUNDAI [XXX], VIN: [XXX] Incident Description: On XXX I was pulling into a parking spot and had my foot firmly on the brake pedal. When I attempted to shift the vehicle into Park the engine suddenly revved up excessively. The vehicle then accelerated forward on its own and crashed into a…”
filed Sep 9, 2026
“I have a 2020 Hyundai Elantra Limited that was purchased new in December of 2020, has 17,764 miles, and no damage. At the end of May/early June of 2026, the car gave warning messages for the following: check forward collision avoidance assist system, check lane keep assist system, and check high…”
filed Jul 3, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
Hyundai has become aware that your Hyundai Elantra equipped with a 2.0 ATK engine may have been incorrectly updated with Cylinder Noise Detection System (CNDS) software intended only for Korean-built Elantra vehicles…
9D3 OL · Service Campaign · issued Sep 11, 2026Certain Elantra (ADA) vehicles may have been incorrectly updated with Cylinder Noise Detection System (CNDS) software that can set DTC P132700; this software was intended only for Korean-built Elantra (AD) vehicles. In…
26-01-039H DN · Service Campaign · issued Aug 6, 2026Some vehicles may exhibit difficulty starting in cold weather. This bulletin provides the procedure to perform an inspection on the starter magnetic switch for potential freezing and, if necessary, replace the starter…
26-EE-003H TSB · Service Bulletin/Repair Instructions · issued Apr 18, 2026In 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, 2025
Electrical System problems in other Elantra years
| Year | Reports | Share |
|---|---|---|
| 2025 Elantra | 1 | 5% |
| 2024 Elantra | 15 | 28% |
| 2023 Elantra | 23 | 23% |
| 2022 Elantra | 19 | 19% |
| 2021 Elantra | 30 | 23% |
| 2019 Elantra | 37 | 15% |
| 2018 Elantra | 43 | 15% |
| 2017 Elantra | 111 | 14% |
| 2016 Elantra | 22 | 8% |
| 2015 Elantra | 23 | 9% |
| 2014 Elantra | 47 | 12% |
| 2013 Elantra | 155 | 12% |
Other reported problem areas on the 2020 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.