2023 RAM PROMASTER Complaints

The contact owns a 2023 Ram ProMaster 3500. The contact stated that while driving at various speeds, the power steering suddenly failed, causing the steering wheel to jerk unexpectedly and pull out of the contact's grip. No warning lights illuminated. The dealer was notified of the failure; however, the vehicle was not taken to the dealer, diagnosed, or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 30,000.

While at the dealership service center, the "service electronic power steering" warning light illuminated on the dash and when driven the steering wheel began snapping back, making driving very difficult. The garage informed us that the van is considered unsafe/undriveable until fixed due to the high risk of causing an accident. Upon inspection by the service center, they stated that the steering pump was filled with water from an unknown source and that the harnesses were completely corroded. The wiring/connectors were also completely corroded and appeared to be causing the issues with steering.

The collision warning system fails to work around 90% of the time. This has been reported to the dealer with no resolution. This is a known problem issue on all Promaster vans and Stellantis refuses to fix the software.

Vehicle wheel would suddenly jerk when driving. Video of steering wheel doing this was taken while parked. The suddenness of this created immediate dangers to the driver and any around due to the unpredictability of the steering. Vehicle was brought to a dealer/service center where they diagnosed a corroded wire harness that required the entire steering rack to be replaced. There were no warnings or dash lights on. Vehicle is still at the service center four weeks later because the wire harness is unavailable and the vehicle cannot be safely driven.

The Electronic Power Steering (and EPS Module) failed, making it incredibly hard to steer especially at low speeds. Dealer confirmed that the power steering rack has failed. All power steering features and lights came on, rendering the vehicle inoperable while driving doen the road. This is a serious safety concern.

Power steering electrical connector(s) completely corroded from moisture intrusion, while driving ps shut down and warning light flashed. Had to suddenly correct in a corner without ps, almost had an accident. It is available for inspection, as I cannot afford to fix this yet. Dealer inspected problem, ps rack and harness need replacement at a cost of appr. CAD $4000-5000. Have not contacted manufacturer yet, but will now. Vehicle warranty just expired and has only 26 k km on it.

Sometimes while driving I experienced my powered steering cut out while taking a ramp on/off of the highway, and sometimes when i was trying to park and back up into a parking space while steering at the same time. When the power steering cut out I got lights for "Service Power Steering", "Service ESC", and "Service Hill Assist" all at the same time, and once i got a power steering light. I looked up the issue and found that there is an active preliminary investigation going on for the same issue on the same vehicle, the investigation coded PE26002. Once I handed the vehicle over to the dealer, they found that the power steering had an open circuit on the steering gear. Once they took the connector off they found that the connector was corroded and the wires were burned on the steering gear and main harness side. I had to have them replace both the steering rack, and the main harness.

Factory-installed Onan generator repeatedly throws fault codes causing complete air conditioning system shutdown. Defect present since early ownership. Three failed repair attempts at authorized Thor Motor Coach dealer La Mesa RV. Generator has never reliably held a load. Creates dangerous condition in extreme heat. Thor Motor Coach has refused to honor warranty.

As I was driving, the steering wheel just jerk and the anti-slide feature came on and swerved me into another lane without me wanting to do so

Due to the loss of power steering the tech at Rainier Dodge of Olympia performed electrical testing per diagnostic chart and found water intrusion into steering harness that has corroded wiring from the body harness into electric steering gear motor/module unit. The electric power steering gear assembly and harnesses must be replaced. The vehicle recieved a fault code U0140 stating loss of communication with body control module.