2026 RAM 3500 Complaints

I made appointment online at Hadadd Dodge to repair this. They said they could only order 1 set if parts per week and they have to repair the trucks on the lot first then will get to us. They canceled the appointment and put us on a waiting list. I made them aware we tow a 5th wheel trailer frequently with this truck.

The contact owns a 2026 Ram 3500. The contact stated that while driving at an undisclosed speed, the check engine, 4WD, ABS, park sensors, and several other unknown warning lights illuminated. The vehicle was taken to the dealer, who replaced the speed sensor for the rear wheels; however, the failure persisted, and the transmission failed to recognize that the gear selector was in park(P). Roadside Assistance arrived and unplugged the battery cables to turn off the engine. The vehicle was towed to the dealer and was waiting for engineers to diagnose the vehicle. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 458.

Trucks Navigation and GPS stopped working. Took to dealer for repairs, could not replicate the issue. They brought the truck back to me, and upon starting it the GPS/Navigation is not working. Other than the navigation, more systems work off the gps and needs to be functioning. Have multiple videos of nav not working, and dealer still stated that wasn't enough to determine there was an issue.

Trucks DEF Gauge malfunctioning goes from full, to half, to full, to empty, and then warns about going into limp mode. Filled with DEF and still doing it. Took in for repairs, company said they fixed it, but within 3 miles gauge was doing the same thing. This is a hazard as it will put the truck in limp mode. Known issue with many complaints, needs fixed

Purchased the truck new with 25 miles on it from the dealer. Within the first 2000 miles, I had a message pop up that said "Service Exhaust System See Dealer". I took it in to the dealer, they said it showed a random emission related code had popped up but was not currently active, so their recommendation was to clear it and see if it came back. Within a day, the message was back and tripped a check engine light. I also noticed after the first 1000 miles, my fuel mileage dropping off significantly around the time the "Service Exhaust System" message first appeared. (I went from 18-19 mpg average, to 12-14 mpg average, driving the same commute to and from work, in the same conditions.) I have noticed unusually high temperatures in the exhaust at times, excessive fuel consumption, excessive DEF consumption, and am concerned about the potential for damage to the DPF or DEF system. I took the truck to my local dealer for diagnosis and repairs. They called me to say that the problem had been traced to a faulty Exhaust Gas Temperature (EGT) control module that was malfunctioning and would need replaced. They then explained that the part was "restricted" by Stellantis/Ram, and was not something they could just order. That they would have to create a "STAR" case with Stellantis and get the part authorized/sent directly from Stellantis. I was also told that they would not receive any updates or communication back on STAR cases and that the part would just show up whenever it shows up, and they would let me know. Was told to drive the truck until the part came in, as they did not have any loaner vehicles available. From some online groups I am in for this series of truck, I found a couple other people with the same problem, who reported that the restricted control module is on backorder from STAR/Stellantis until at least mid-January.