2016 Ram 2500 electrical problems

Filed Aug 31, 2026 · Electrical, Transmission · SC

I am reporting a transmission safety problem with my 2016 Ram 2500 Cummins that began shortly after FCA campaign U29 was performed. Before the recall work, the transmission and original solenoid were functioning normally. I had no transmission symptoms, warning lights, or transmission codes. The dealership performed U29 and replaced the transmission solenoid May 4-6, 2026. I picked the truck up May 6 at 149,091 miles. About 79 miles later, the check-engine light came on and transmission problems began. While driving, including on the interstate, the truck would suddenly jerk, the RPMs would rise quickly, and the truck would lose speed. On several occasions, traffic behind me had to react quickly to avoid hitting me. The dealership told me the solenoid installed during the U29 repair was defective and replaced it with another solenoid. The same problems continued. The truck later developed code P0871, became undriveable, and was towed back June 1. The original transmission ultimately failed. The dealership then installed a Mopar remanufactured transmission. I picked it up June 13. Within roughly 600 miles, it developed substantially identical symptoms and failure patterns, including P0870 and P0871, limp mode, and another major transmission failure. It was towed back June 24. The dealership later found the overdrive clutch had disintegrated and metal was present in the transmission fluid. The failed remanufactured transmission is now being handled under its Mopar warranty, and the dealership is looking to install a third transmission without identifying a clear reason for the repeated failures. I am concerned the same problem could happen again and believe the U29 repair, replacement parts, or another related transmission problem should be investigated.

Filed Jul 14, 2026 · Electrical · WV

To Whom It May Concern, I am requesting a no-cost replacement of the factory Uconnect 8.4 radio in my truck (VIN: [XXX]) due to daily safety-related failures that significantly affect the safe operation of my vehicle. Every day, the radio experiences a startup delay where the screen remains black and many center stack functions are unavailable. This delay often lasts 5–10 minutes before the system becomes operational. During normal driving, the radio also displays repeated “Vehicle Phone Requires Service” error messages, creating a constant distraction that takes my attention away from the road. When these issues occur, the factory backup camera is unavailable. Losing the backup camera eliminates an important safety feature intended to help prevent collisions with pedestrians, children, vehicles, and objects while reversing. Additionally, the factory navigation and GPS no longer function at all. These are not minor convenience issues—they are daily safety concerns. Safety-related features should work immediately every time the vehicle is started. A factory infotainment system that fails every day, disables the backup camera during startup, and repeatedly distracts the driver while the vehicle is in motion presents an unacceptable safety risk. Because these failures occur daily and involve factory-installed safety equipment, I believe Stellantis should replace the defective Uconnect radio at no cost. I respectfully request that this complaint be documented and that a no-cost replacement be authorized. Thank you for your prompt attention to this matter. [XXX] VIN: [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed May 2, 2026 · Brakes, Electrical · NY

Electronic brake controller faulty

Filed Dec 30, 2025 · Acceleration, Brakes · CA

ABS FAILURE, WHICH TURNS OFF TRACTION CONTROL AND CRUISE CONTROL. This is a known issue for the HCU to fail. How is this not a recall on 2016 but it is on 17 and 18. Same parts.... have replace front hubs with new ABS sensors and rear ABS sensors, still on. It has to be the HCU or the module.

Filed May 28, 2024 · Brakes, Electrical · WI

My ABS lights is on causing my cruise control to not be functioning. When I first start the vehicle, i get a message to "service electronic brake system." I have new brake pads with rotors and still have this message.

Filed Dec 4, 2023 · Acceleration, Driver assistance · ID

ABS system/ Traction control system/ 4wheel drive system/ cruise control. I had the ABS system repaired/replaced once this year already and now i need it done again. ABS failure makes the 4wheel drive system fail and it's winter time and i need 4 wheel drive for safety.

Filed Aug 23, 2023 · Brakes, Electrical · MO

Abs/hcu failure causing erratic braking brakes locking up. Diagnosed idepentdant shop,not yet repaired. No inspection Abs warning

Filed Jul 16, 2023 · Airbags, Electrical · GA

Driving truck and automatic changed to manual 4th gear - would not stay in automatic and would not go into any other manual gear at same time cruise stopped working along with the horn, seat belt light came on and would not go off , ESC light came on and did not go off, non of the steering wheel controls would work work , air bag light came in and would not go off , horn would not work at steering wheel but will when using key lock

Filed Apr 24, 2023 · Electrical, Engine · CA

6.7L Cummins diesel Known Grid heater bolt broke and could leave people stranded as it causes catastrophic engine failure and or damage leading up to $20 to $30K in engine repairs. Ram knows about this issue and is doing nothing about it. Mine broke and I caught it just before it destroyed my engine. the fix was a $1k kit. This bolt corrodes and and drops down into the intake in which destroys the #6 cylinder, piston, wall and valves. Ram is doing nothing to fix the problem and leaving people stranded who haul trailers and with the big repair bills.

Filed Feb 9, 2023 · Electrical, Engine · MI

The grid heater bolt that is on the bottom side of the grid heater. It fails and the bolt falls off and get sucked into the engine destroying the piston and cylinder causing an over 10,000$ expense.