Most common 2015 Ram Promaster 2500 problems
Share of the 23 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Ram Promaster 2500 complaints by model year
What 2015 Ram Promaster 2500 owners say
Transmission & drivetrain
The contact owns a 2015 Ram 2500. The contact stated while driving approximately 35-40 MPH, the accelerator pedal was depressed; however, the vehicle failed to respond. An unknown warning light was illuminated. The contact then turned around and returned to his residence. The contact stated upon parking and turning off the vehicle, the cooling fan remained engaged. An independent mechanic arrived at the residence the next day and diagnosed that there was a wiring failure and the power control module had failed. The dealer was notified of the failure and advised the contact to take the vehicle in for a diagnostic test. The vehicle was not repaired. The manufacturer was notified of the failure and a case was opened. The manufacturer referred the contact to NHTSA. The failure mileage was approximately 92,900.
The coupler between the motor and the transmission has repeatedly failed; also, the axle has failed twice, the last axle failure the shaft split in half and part of it ended up in the gear box. The A/C continually leaks as the high pressure hose from condensor to compressor is too short. The attached is a lawsuit that zenith filed in June 2016 over it's repeated drive train failures, alleging borg warner at fault. Attached is a depiction of the zenith portal that was established to communicate and track service tickets on repairs; however, on August 10, 2016 zenith denied us any further access to the portal. Zenith has refused to give us support. We are a commercial operator with courtesy passenger shuttles for movement of people to and from our parking lot and to the san diego airport. We are a ground transportation off airport parking operator. …
Engine & cooling
The contact owns a 2015 Ram Promaster 2500. The contact stated that while his client was driving at an undisclosed speed, the vehicle was shudder abnormally, prompting him to pull over to the shoulder of the roadway. No warning lights were illuminated. The vehicle was taken to an independent mechanic, who determined that the fan bearings were damaged, allowing the fan to move back and forth freely. The vehicle was not repaired. After investigating the failure, the contact related it to NHTSA Campaign Number: 19V818000 (Equipment, Engine and Engine Cooling) but the VIN was not included. The manufacturer was not notified of the failure. The failure mileage was unknown.
2015 Ram Promaster diesel 2500 with 72000 miles. Vehicle was in excellent condition, well maintained, with oil changes per factory recommendations. While driving at highway speeds of 70 -75 MPH, without warning there was a sudden and hard thud in the engine compartment and the vehicle began slowing very rapidly, as if brakes were being applied. I immediately pulled over to the side of the road. As the vehicle slowed and came to a stop, there was significant smoke and steam rising from the engine compartment. I was concerned that the vehicle was on fire, but it was not. It smelled of burnt radiator fluid and burnt clutch plates. The vehicle was towed to the nearest dealership and the tow operator had difficulty loading and unloading the vehicle since the engine and transmission were completely locked up and the drivetrain wheels would not turn. …
Electrical system
The contact owns a 2015 Ram 2500. The contact stated while driving approximately 35-40 MPH, the accelerator pedal was depressed; however, the vehicle failed to respond. An unknown warning light was illuminated. The contact then turned around and returned to his residence. The contact stated upon parking and turning off the vehicle, the cooling fan remained engaged. An independent mechanic arrived at the residence the next day and diagnosed that there was a wiring failure and the power control module had failed. The dealer was notified of the failure and advised the contact to take the vehicle in for a diagnostic test. The vehicle was not repaired. The manufacturer was notified of the failure and a case was opened. The manufacturer referred the contact to NHTSA. The failure mileage was approximately 92,900.
The engine needs to get replaced. It blew the gaskets. Headlights stopped working. I took it to the dealer and was told it was the bulbs. Bulbs were switched out and they still didn't work. Sometimes I have to turn the truck off then on again in order to get the transmission to properly work.
Frequently asked questions
Is the 2015 Ram Promaster 2500 a good car?
There isn't enough complaint history for the Promaster 2500 to compare model years reliably. So far owners have filed 23 complaints with NHTSA.
What is the most common problem with the 2015 Ram Promaster 2500?
The transmission & drivetrain — 11 complaints, 48% of all complaints for this model year, most often about automatic transmission › control module (tcm/pcm/tecm). Next are the engine & cooling (7) and electrical system (5).
How many recalls does the 2015 Ram Promaster 2500 have?
NHTSA lists no recalls for the 2015 Ram Promaster 2500. You can still confirm with your VIN using our VIN recall check.
At what mileage do 2015 Ram Promaster 2500 problems happen?
The median mileage reported in complaints is about 50,000 miles; 47% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.