2023 RAM Promaster Problems

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.

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.

The contact owns a 2023 Ram Promaster 2500. The contact received notification of NHTSA Campaign Number: 25V720000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact stated that while the vehicle was parked, there was a humming sound coming from the vehicle, and the contact became aware that smoke was coming from the engine compartment. Shortly afterwards, the battery was disconnected, the fan was running, and the vehicle was engulfed in flames. The contact stated that the headlights, hood, windshield, and grill were damaged by the fire. There was no one in the vehicle at the time of the fire, and there were no injuries sustained. The contact stated the local fire department was contacted. The vehicle was not inspected or repaired. The manufacturer was made aware of the failure. The contact associated the failure with the recall. The failure mileage on the vehicle was approximately 143,000.

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.

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.

The contact owns a 2023 RAM PROMASTER. The contact stated while driving the vehicle at an undisclosed speed, while changing lanes the steering wheel is trying to drive the vehicle into another lane and barriers at times without the Collison avoidance system activating. The contact stated the collision avoidance system is very delayed or sometimes does not show up at all, he also stated that the Collison avoidance waring states it needs maintenance, the contact stated that the vehicle feels like it is close to tipping over and requiring a "death grip" on the steering wheel enable to keep it in control. The vehicle was taken to multiple dealers were they would not diagnose the vehicle. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 43,518.

Without any warning my steering wheel locked up and started jerking resulting in lack of steering and drivability. I was backing out of my driveway and started to turn onto the street when this happened. This could have been very dangerous if I had been driving on regular roads. The van is currently parked on the street and available for inspection as I was able to gently maneuver it to a safe spot. This has been looked at by a mobile mechanic who put an OBD2 scanner on it and couldn't bring up any codes. It has not been taken to a shop at this point. The dealer said over the phone that this is not a powertrain warranty because it is not engine or transmission. It has not been inspected by the manufacturer, police, insurance. There were warning lights on the panel when this happened but they didn't stay on. Checking the internet for answers I discovered that a power connection to the rack for power steering was getting corroded from not being sealed properly and water was entering the connection. Today I removed the black battery cable and checked on the connector to the rack myself and discovered the same issue many people are having. below is a photo from today January 9, 2026. The connector looks corroded and burnt. Why is this not a recall? This is not safe.

Fuel tank leaking at inlet port, dripping gasoline on the driveway and making vehicle not drivable due to the risk of fire. Independent service center replaced fuel tank to fix issue. No warnings 6/25/2026

Fuel tank leaking on the ground. Tank leaking at inlet connection Vehicle at Sunset Dodge for tank replacement, waiting on back ordered fuel tank no warning tank started leaking 7/10/2026

While driving the dash screen show a caution with a note that vehicle is in "Limp Mode" as I was on a freeway this became a huge problem putting my life at risk and for others moving at the speed of traffic then suddenly having to decelerate in order to move around me. This problem has been reported to the dealership and confirmed that this is a common issue, there was no warning ahead of time.

While driving in forward motion, the van seems to brake or downshift for a brief second. Seems to pull to left a little. Could be very hazardous if this isn’t fixed.

While driving in forward motion, the van seems to brake or downshift for a brief second. Seems to pull to left a little. Could be very hazardous if this isn’t fixed.

What component or system failed or malfunctioned, and is it available for inspection upon request? The vehicle’s Collision Avoidance / Automatic Emergency Braking engaged on highway. The van is available for inspection at anytime.  How was your safety or the safety of others put at risk? Yes  Has the problem been reproduced or confirmed by a dealer or independent service center? The dealership was unable to duplicate issue on a test drive, but an independent service center (Safelite Auto Glass) detected a fault code (C14A5-92) related to Lane Departure and Automatic Emergency Braking.  Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Not at this time  Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? The “Collision Avoidance OFF” and “ESC” lights illuminated when the Automatic Emergency Braking engaged while vehicle slid into an adjoining lane on the interstate.

I finally found a place to report issues with my 2023 Ram ProMaster 3500. I have experienced different issues with this vehicle. The turn indicator failure first started around 8000 miles. The door ajar light for the sliding door started around 35000 miles. What I believe is the traction control, has been an ongoing issue unsure of when it started, but is the most common issue. 1) Multiple times, the left turn signal randomly fails, the bulb indicator light turns on. The front left and mirror signal don't work. While the rear one does. Then out of nowhere, it starts to work again. Has happened multiple times. 2) multiple times right side sliding door sensor fails. Can be up to 2 hours after driving, the door ajar symbol comes on. Making the user interface unusable. Stop the van, open and close the door, it clears it. Then shortly later, the door ajar indicator comes on. And with the door ajar light illuminated, it does not allow the doors to be locked. 3) the traction control (i believe), on one side or the other, will grab, making a grinding noise, slow the vehicle down slightly and pull it slightly in that direction. It happens on any surface type, dry, wet, or icy. And happens at highway speeds, 50-80 mph. I've notice it happen a quite a few times when passing another vehicle. Which ever side the vehicle is on that you are passing, that side will grind (activate)

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.

I finally found a place to report issues with my 2023 Ram ProMaster 3500. I have experienced different issues with this vehicle. The turn indicator failure first started around 8000 miles. The door ajar light for the sliding door started around 35000 miles. What I believe is the traction control, has been an ongoing issue unsure of when it started, but is the most common issue. 1) Multiple times, the left turn signal randomly fails, the bulb indicator light turns on. The front left and mirror signal don't work. While the rear one does. Then out of nowhere, it starts to work again. Has happened multiple times. 2) multiple times right side sliding door sensor fails. Can be up to 2 hours after driving, the door ajar symbol comes on. Making the user interface unusable. Stop the van, open and close the door, it clears it. Then shortly later, the door ajar indicator comes on. And with the door ajar light illuminated, it does not allow the doors to be locked. 3) the traction control (i believe), on one side or the other, will grab, making a grinding noise, slow the vehicle down slightly and pull it slightly in that direction. It happens on any surface type, dry, wet, or icy. And happens at highway speeds, 50-80 mph. I've notice it happen a quite a few times when passing another vehicle. Which ever side the vehicle is on that you are passing, that side will grind (activate)

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.