2020 RAM Promaster problems & reliability
40 owner complaints filed with NHTSA for the 2020 RAM Promaster, alongside 5 safety recall campaigns. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
1 complaint report injuries (2 injured).
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Back Over Prevention → | 10 | 25% |
| Power Train → | 10 | 25% |
| Unknown OR Other | 9 | 23% |
| Electrical System | 7 | 18% |
| Engine | 4 | 10% |
| Engine and Engine Cooling | 4 | 10% |
| Visibility/wiper | 4 | 10% |
| Steering | 3 | 8% |
| Seat Belts | 2 | 5% |
| Air Bags | 1 | 3% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
All 16 reported components →Complaints by incident year
What owners report
“The rear backup camera is intermediate and does NOT provide a visible image 90% of the time. When the vehicle is in reverse the display reports a message, "Camera System Unavailable". The van doesn't have rear or side windows and makes it nearly impossible to safely backup the vehicle.”
Back Over Prevention · filed Jun 17, 2026
“The contact owns a 2020 Ram 3500. The contact stated that the vehicle, began to make a loud noise, and misfired. The vehicle was taken to the dealer where it was diagnosed with repaired; however the issue persisted. The vehicle was not taken for repairs again. The manufacturer was notified of the issue. The…”
Engine · filed May 26, 2026
“The contact owns a 2020 Ram Promaster. The contact received notification of NHTSA Campaign Number: 25V720000 (Engine And Engine Cooling) however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for…”
Engine and Engine Cooling · filed May 26, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Technical service bulletins
228 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2020 RAM Promaster. The 10 most recent:
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, 2026
Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.
S1623000028 REV.J · Service Bulletin/Repair Instructions · issued Jun 5, 2026
Outside 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, 2026
Outside Power Fold Rearview Mirror Noise Or Loose At Pivot. Mirror Contacts Door Window Glass In The Folded Position.
S1623000028 REV.H · Service Bulletin/Repair Instructions · issued Apr 1, 2026
Water Leak From Roof Area.
S2623000019 · Service Bulletin/Repair Instructions · issued Mar 27, 2026
Start 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, 2026
WATER PUMP
110447 · Service Bulletin/Repair Instructions · issued Feb 23, 2026
WATER PUMP
110448 · Service Bulletin/Repair Instructions · issued Feb 23, 2026
Start 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
D-25-17 Rev. A ALL Model Years 2019 - 2021 VF, DS, LA, LD and LX with a 3.6L Engine for Camshaft and/or Rocker Arm Replacements
109621 · Warranty Program/Extension · issued Jan 21, 2026
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
The 2020 RAM Promaster has 5 NHTSA recall campaigns — recall repairs are free at franchised dealers regardless of the vehicle’s age.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2020 RAM Promaster?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.