2021 RAM 1500 exterior lighting problems
13 owner complaints filed with NHTSA name the exterior lighting on the 2021 RAM 1500 — 2% of all complaints for this model year.
What owners report
“The contact owns a 2021 RAM 1500. The contact stated that while driving on several occasions at various speeds, the high beam headlights failed to illuminate while the button was depressed. The vehicle was taken to the dealer and was diagnosed and determined that the CSSM needed to be replaced. The…”
filed Jul 22, 2026
“Alt/Gen failure stopped the truck in the middle of an intersection No transmission power steering lights. Had to walk back home to charge the battery in a driving rain storm leaving the truck in the intersection.”
filed Jan 16, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Exterior Lighting problems in other 1500 years
| Year | Reports | Share |
|---|---|---|
| 2026 1500 | 7 | 10% |
| 2025 1500 | 45 | 15% |
| 2024 1500 | 1 | 1% |
| 2023 1500 | 13 | 7% |
| 2022 1500 | 13 | 2% |
| 2020 1500 | 19 | 3% |
| 2019 1500 | 22 | 2% |
| 2018 1500 | 10 | 2% |
| 2017 1500 | 12 | 1% |
| 2016 1500 | 18 | 1% |
| 2015 1500 | 26 | 2% |
| 2014 1500 | 39 | 2% |
Other reported problem areas on the 2021 RAM 1500
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.