There are 3 owner-reported engine complaints for the 2020 Ram ProMasterin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The contact owns a 2020 Ram ProMaster 2500. The contact stated that while the vehicle was parked and turned off, the engine cooling fan continued running. The vehicle was towed to the dealer, where it was diagnosed and determined that the wiring harness, fuse box, and two modules had failed and needed to be replaced. The vehicle was repaired; however, the failure recurred. The contact discovered that the VIN was associated with NHTSA Campaign Numbers: 25V720000 (Engine and Engine Cooling) and 25V552000 (Back Over Prevention) while searching online. However, parts to do the recall repairs were not yet available. The vehicle was towed back to the dealer, where it was diagnosed, and determined that the cooling fan module and fuse had failed and needed to be replaced. The vehicle was not repaired. The dealer confirmed that parts were not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure and placed the contact on a waiting list for parts to become available. The approximate failure mileage was 137,000.
The contact owns a 2020 Ram Promaster 2500. The contact stated that while reversing, the rear-view camera screen displayed a pixelated image. In addition, the contact stated that occasionally the rear-view camera screen displayed a white screen. The contact stated that the vehicle was purchased for redesigning into an RV for traveling purposes. In addition, the contact stated that when the vehicle was purchased, the dealer informed the contact about the open recalls. The contact was informed that the parts would be available in December 2025. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The contact later received notifications of NHTSA Campaign Number: 24V031000 (Back Over Prevention) and 25V720000 (Engine and Engine Cooling); however, the parts were not available. The dealer was made aware of the failure. The manufacturer was made aware of the failure. The failure mileage was approximately 65,000.
The contact owns a 2020 Ram Promaster 1500. The contact stated that while his wife was driving at an undisclosed speed, the vehicle jerked, and the transmission downshifted unexpectedly. The check engine warning light illuminated. In addition, while shifted in reverse(R), the vehicle failed to function as intended. The vehicle was taken to the dealer, where it was diagnosed with transmission failure. The contact was informed that parts were not available to repair the vehicle. The vehicle remained at the dealer for over a year and a half. The vehicle was repaired. The contact stated that on the day the contact was supposed to pick up the vehicle, the contact noticed oil stains on the ground. The contact stated that an abnormal sound was coming from the steering wheel when the gear lever was in reverse(R). The steering wheel failed to function as intended; when the steering wheel was moved, the steering wheel remained frozen in position, and force was used to turn the steering wheel. The maintenance record showed that service was performed. However, when the contact checked the oil, the oil was black, and there was a rotten odor coming from the oil and the vehicle remained at the dealer. The contact later received notifications of NHTSA Campaign Numbers: 25V552000 (BACK OVER PREVENTION) and 25V720000 (ENGINE AND ENGINE COOLING). The contact stated that when the heater was activated, heat was coming from the vents on the passenger side, and heat failed to come from the driver’s side. The contact was informed that the vehicle was repaired. The vehicle was retrieved, and days later the transmission failed to function as needed. The dealer was contacted; however, the contact was informed that the transmission had been repaired and no more repairs were needed. The manufacturer was made aware of the failure and the contact was informed that a field inspector would be sent to inspect the vehicle at the residence. The contact stated that days later the manufacturer sent a letter that the case was closed. The failure mileage was approximately 69,580.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026