Complaint 2225438

Complaint Summary

ENGINE

Owner Narrative

While operating a 2023 Ram ProMaster 2500 (3.6L V6) for normal commercial use at approximately 39,129 miles, the coolant began bubbling and engine temperature spiked suddenly while driving. The vehicle was immediately parked and towed to an authorized Chrysler Jeep Dodge Ram dealership as it was completely undrivable. This created a serious safety risk as the vehicle lost drivability suddenly on public roads during active commercial operation. Upon teardown the authorized dealer documented: coolant leaking into cylinders 3 and 4, coolant coming out of exhaust, stretched engine bolts, warped block and head, and internal coolant leak causing overheat. No external leaks from the cooling system were found. The internal component failures caused the overheating not the reverse. The vehicle was still within its active powertrain warranty at time of failure. Stellantis denied the warranty claim under TSB D-23-20 claiming an undetermined overheat caused the engine failure directly contradicting their own dealer's findings which show zero external cause. I have paid $9,000 out of pocket for repairs that should be covered under active powertrain warranty on a 3-year-old vehicle under 40,000 miles. I am requesting NHTSA investigate this failure pattern in the 3.6L V6 Ram ProMaster 2500 as other commercial operators may face the same sudden dangerous failure.

Owner-submitted narrative on file with NHTSA. Complaint narratives are self-reported and have not been verified.