2026 Ram 1500: check engine light

Filed Nov 7, 2026 · Electrical, Engine · NV

The electronic door locking and unlocking system on my 2026 Ram 1500 malfunctioned repeatedly beginning in approximately August–September 2026. During one incident, my family and I were unable to exit the vehicle normally for approximately 15 minutes in Las Vegas summer temperatures of approximately 115°F. The doors also repeatedly failed to lock, unlock, or properly secure the vehicle, creating serious safety and security concerns. No warning light was observed before these electrical failures. In October 2026, the vehicle developed additional problems involving repeated check-engine warning lights, multiple-cylinder misfires, and abnormal grinding or dragging engine sensations. Desert 215 Superstore technicians confirmed diagnostic trouble code P0300 and documented cold-start misfires affecting cylinders 1, 3, and 5 under service invoice #171349, dated October 14–19, 2026, at approximately 2,990 miles. The vehicle was returned to the dealership around October 20–21 after the engine symptoms recurred. Stellantis technical assistance was reportedly involved under STAR Technical ID 103007728. The dealership has inspected the vehicle, but I have not received documentation confirming a separate physical inspection by a manufacturer representative. The door-related safety incidents were previously reported to dealership personnel but were not adequately documented in the service records, and I have no written confirmation that those failures were reproduced. The vehicle remains at Desert 215 Superstore in Las Vegas, Nevada, and may be available for inspection through the dealership. I am requesting that the federal safety agency document and review these recurring electrical and engine-related problems as potential safety defects, particularly because of the risk to vehicle occupants and my family's safety. STAR Case / Technical ID #103007728

Filed Oct 4, 2026 · Engine, Transmission · TX

Motor Generator Unit. The dealer is swapping it under warranty. Failure is a risk to safety because it shuts the truck off while driving. Last time it was at 70 mph on a busy interstate. Problem has been confirmed by Ram dealer. There were no warnings prior to the failure. There were also no check engine lights after for 4 events. Then on the 5th time of shutting off, it left a check engine and battery light.

Filed Sep 8, 2026 · Brakes, Electrical · UT

The vehicle has failed to start and left me stranded multiple times. The concerning thing here is, upon jumping the vehicle, there were no concerning lights just a single check engine light. I was driving directly to the dealer for a repair. All was fine for about 10 minutes. Then, I hit the brakes and all warning lights came up and the brakes STOPPED WORKING. The pedal was soft and going nearly to the floor. I very luckily avoided an accident and pulled over, then had the vehicle towed to the dealer. A week and a half later, when trying to start the truck it had another full electrical freakout and was towed to the dealer again.

Filed Aug 15, 2026 · Driver assistance, Electrical · NM

Vehicle auto braking inoperative, lane detection not working, main screen goes completely black. Vehicle went into limp mode while entering the freeway . Main dash flagged yellow, and highlighted check engine, service electric stability control, airbags service, 4 x 4 unavailable, service electronic stability control.

Filed Aug 12, 2026 · Electrical · CA

Check engine light was electrical failure truck has been in the shop for a week now .

Filed Aug 12, 2026 · Electrical · CA

Check engine light on 2026 ram RHO Ram Dealerships selling trucks when they know have electrical problems coming off the assembly line.

Filed Jul 5, 2026 · Engine · NY

1st incident: approx: 4/1/26. Bought brand new , had for 2 days . Approx had 40 miles on it. Check engine light came on several times, had to bring to dealer. 2nd incident : approx: 6/15/26 driving vehicle doing appr 50 MPH, vehicle suddenly did not give gas would not move. Rpm went to 6000 RPM , had to pull over.with no control 3rd incident: same issue: brought to dealer ; don't know whats wrong? Maybe sensor or instrumentation cluster replacement truck only has 6,000 miles on it.

Filed Apr 8, 2026 · Electrical, Engine · TN

Vehicle: 2026 Ram 1500 Limited I am filing a safety complaint regarding a brand new vehicle that experienced a dangerous failure in live traffic and continues to have unresolved issues. The vehicle was purchased on March 31, 2026. On April 3, 2026, just three days after purchase, the truck broke down in active traffic. The situation was serious enough that local police had to respond to direct traffic while the vehicle was towed. This created a clear safety hazard for both the occupants and other drivers on the road. The vehicle was taken to the dealership on April 4, 2026 for repair. At that time, the dealership replaced the battery and reset a radio frequency module. We were notified the vehicle was repaired and ready for pickup on April 7, 2026. However, immediately after leaving the dealership, the vehicle began experiencing additional failures. The key fob would not function, the doors would not lock or unlock electronically, and the vehicle struggled to start. Within minutes, the check engine light illuminated. Due to safety concerns, the vehicle was returned to the dealership the same day. After returning the vehicle, we were informed that there is a short in the main PDC (power distribution center / fuse box). This critical issue was not identified or addressed during the initial service visit. A fault in the main fuse box presents a serious safety concern, including the potential risk of an electrical fire. Additionally, the dealership failed to properly verify the repair before releasing the vehicle. The truck was not adequately tested or driven after the initial repair, resulting in us being sent to pick up a vehicle that was still unsafe and malfunctioning. This vehicle has been in our possession for approximately one week and has already experienced multiple serious failures, including a breakdown in live traffic, repeat electrical failures, and now a confirmed issue within the main power distribution system. The vehicle is unreliable and poses