2018 Tesla Model 3 electrical system problems
168 owner complaints filed with NHTSA name the electrical system on the 2018 Tesla Model 3 — 16% of all complaints for this model year.
What owners report
“While my wife was driving, the high-voltage battery failed and the car went into reduced power/limp mode. Tesla later determined that coolant had gotten into the high-voltage battery and caused it to fail. My main concern is that we had no warning that there was a coolant leak or that coolant was…”
filed Sep 6, 2026
“Component/system: The front passenger Occupant Classification System (OCS) in my 2018 Tesla Model 3. The vehicle is available for inspection on request. Description of the failure: The vehicle intermittently displays "Front passenger safety restraint system fault — service required]" on the center…”
filed Jul 26, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- An incorrect font size is displayed on the instrument panel for the Brake, Park, and…Campaign 24V051000 · Jan 30, 2024
- In certain circumstances when Autosteer is engaged, the prominence and scope of the…Campaign 23V838000 · Dec 12, 2023
- Unit of speed (mph or km/h) may fail to display on the speedometer while in Track ModeCampaign 22V263000 · Apr 18, 2022
Electrical System problems in other Model 3 years
| Year | Reports | Share |
|---|---|---|
| 2026 Model 3 | 1 | 5% |
| 2025 Model 3 | 20 | 17% |
| 2024 Model 3 | 44 | 20% |
| 2023 Model 3 | 51 | 12% |
| 2022 Model 3 | 59 | 8% |
| 2021 Model 3 | 78 | 12% |
| 2020 Model 3 | 42 | 9% |
| 2019 Model 3 | 91 | 15% |
| 2017 Model 3 | 2 | 8% |
Other reported problem areas on the 2018 Tesla Model 3
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.