2021 RAM Promaster electrical system problems
19 owner complaints filed with NHTSA name the electrical system on the 2021 RAM Promaster — 18% of all complaints for this model year.
What owners report
“I had NHTSA recall for this generator done (23E-030) which was to solve the same problem I just had. Apparently, they just moved to a smaller diameter fuel line to fit the fuel pump better. However, this hose also came off my Cummins generator fuel pump and was spewing gas all over the generator…”
filed May 26, 2026
“My 2021 Ram ProMaster 2500 has two open safety recalls with no remedy available: NHTSA Recall 25V-552 (rearview camera FMVSS 111 compliance issue) issued August 26, 2025 NHTSA Recall 25V-720 (cooling fan fire risk) issued October 23, 2025 As of April 2026, no remedy has been provided for either…”
filed Apr 12, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.
S1623000028 Rev. K · Service Bulletin/Repair Instructions · issued Jun 12, 2026Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.
S1623000028 REV.I · Service Bulletin/Repair Instructions · issued May 29, 2026Start Stop Charging Warning Lamp Illuminated On, Intelligent Battery Sensor (IBS) State of Charge (SOC) Inaccurate, Battery Charging Message, Presence of IBS related Diagnostic Trouble Codes (DTCs), or Battery Warning…
S1408000384 REV.J · Service Bulletin/Repair Instructions · issued Mar 4, 2026Start Stop Charging Warning Lamp Illuminated On, Intelligent Battery Sensor (IBS) State of Charge (SOC) Inaccurate, Battery Charging Message, Presence of IBS Related Diagnostic Trouble Codes (DTCs), or Battery Warning…
S1408000384 REV.I · Service Bulletin/Repair Instructions · issued Feb 14, 2026
Electrical System problems in other Promaster years
| Year | Reports | Share |
|---|---|---|
| 2023 Promaster | 21 | 28% |
| 2022 Promaster | 13 | 22% |
| 2020 Promaster | 7 | 18% |
| 2019 Promaster | 4 | 7% |
| 2018 Promaster | 11 | 30% |
| 2017 Promaster | 20 | 35% |
| 2016 Promaster | 7 | 23% |
| 2015 Promaster | 16 | 27% |
| 2014 Promaster | 19 | 27% |
Other reported problem areas on the 2021 RAM Promaster
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.