*Median odometer reading when the problem happened, where owners gave one. One complaint can name several problem areas.
Engine
The check-engine light came on my 2nd day of ownership (less than 100 miles driven by me, but 2032 miles on it when purchased new - RV conversion from Entegra Coach through LaMesa RV), on October 5, 2025. After diagnosis at a Ram dealership (Larry Miller Dodge Ram in Tucson AZ), they identified the code was misfire on cylinder 6, which caused low compression, with a root cause of the intake valves being improperly seated during manufacturing. The dealership replaced some cylinder and engine parts, but the issue recurred on Cylinder 4 after driving it about 5000+ miles, on June 13, 2026. Again, misfire check-engine code and loss of compression on cylinder 4. The engine ran very rough and had…
Oct 5, 2025Service brakes
whenever I was driving on the highway at 80MPH it felt like someone stepped on the brake pedal abruptly for a split second and the car with squiggly lines behind it appeared on the instrument panel, then disappeared. Goin this fast and having that happen is a major safety issue. After this happened the steering felt all over the place like I was floating and if I turned the wheel just a tiny bit the vehicle thought I turned it a lot and over corrected, needless to say I was all over the highway. Then the backup camera stopped working, the screen was completely black. I reset the screen and it worked for a couple seconds but then the color and picture got very distorted and then again went…
Jun 11, 2026Steering
Plug to electronic power steering rack and pinion corroded causing low voltage and loss of power steering control.
Apr 12, 2026Engine
Office of Defects Investigation National Highway Traffic Safety Administration 1200 New Jersey Avenue SE Washington, DC 20590 Re: Safety Defect Complaint â Ram ProMaster (2018â2025) â Cowl Water Intrusion into Engine Compartment To Whom It May Concern, I am writing to formally report what I believe to be a serious, systemic, and unresolved design defect in the Ram ProMaster van, affecting model years 2018 through at least 2025. I am requesting that the Office of Defects Investigation open or expand a formal investigation into this matter. Nature of the Defect: The windshield cowl on the Ram ProMaster is designed in a manner that permits significant water intrusion directly into the…
Dec 1, 2025Engine
Check engine light came on the 2nd day I owned it. The van was converted to an Entegra Ethos Class B RV by Entegra/Jayco, and had over 2000 miles in it when I bought it (New 2026) from La Mesa RV in Tucson AZ on Oct 4, 2025, after they transferred it from the Phoenix La Mesa RV location. After checking the engine light code with an Auto Parts store, it was shown to be an issue with the 6th cylinder. After getting the runaround from 2 Dodge dealers (system down, too busy, no certified tech), I took it to a privately owned garage who diagnosed low compression in the 6th cylinder. They were concerned for my safety to drive it. With this testing info written by the private garage, I got the…
Oct 5, 2025Latches/locks/linkages
The contact owns a 2025 Ram ProMaster 3500. The contact stated that the passengerâs side sliding door failed to unlock, and the sliding door could to be opened from outside or inside the vehicle. The contact stated that the failure was intermittent. The cause of the failure was not yet determined. The local dealer and manufacturer were not yet notified of the failure. The failure mileage was 600.
Jul 1, 2025 · 600 miles
Owner complaints are submitted to NHTSA by the public and are not verified. Shown as filed (NHTSA removes personal details); long reports are shortened.