2021 Ram 1500 TRX electrical system problems

“Complainant [XXX], a licensed contractor, master plumber, and master craftsman in [XXX], reports an unresolved, hazardous defect pattern on a 2021 RAM 1500 TRX (odometer: ~27,842). The vehicle features a 702-hp supercharged 6.2L V8 requiring specialized auxiliary cooling to prevent acute thermal derating, engine shutdown, and loss of motive power at highway speeds. BeginningXXX, recurring check-engine lights, "Intercooler Coolant Low" warnings, and confirmed DTCs P026E (Charge Air Cooler Coolant Pump Performance) and P0EA7 (Auxiliary Coolant Pump Control Circuit Performance) emerged, governed by Stellantis TSB 07-003-22. The vehicle was brought repeatedly to authorized dealer [XXX] CDJR ([XXX]) under Service Director [XXX] for safety remediation. Instead of curing the root electrical and cooling failures, the dealer engaged in a 5-month cycle of clearing codes, withholding Wi-Tech diagnostic logs, and holding the truck across multiple visits for over 45 cumulative days. During these extended holds, the vehicle suffered multiple deep-discharge battery cycles and parasitic drains, further degrading safety-critical electrical modules. The dealer then refused to…”

“There are issues where the dash display goes blank and the headlights do not operate properly. The headlights will not switch from dim to bright automatically or manually. At times one or more lights will not even illuminate. It is not a constant problem but intermittent instead. We are not comfortable driving the vehicle after dark because it may happen at any time.”

“Original incident occurred in March 2026. While traveling at highway speeds my 2021 Ram 1500 lost all power and engine shutoff. I was able to get the truck to the side of the interstate due to it's momentum. Once I come to a stop, the e-brake is automatically applied and the vehicle will not restart or respond to any inputs from the keyfob. Vehicle is towed to nearest dealer, am told that the issue is related to an open recall that they have fixed and is now operating as normal. Less than one week later, the exact same thing occurs again, once again while traveling at highway speeds. Is towed into another dealer for service, and it is identified that the RF Module/Hub will need replaced due to a water leak. Repair is completed and vehicle returns to normal operation. 10/16/26 I attempt to start the vehicle with no success. After evaluating for a dead battery the vehicle is once again towed to a dealer (the same one that serviced it the first time). It is again identified that the RF Module/Hub will need replaced again due to a water leak around the back glass. I point out the Warranty Bulletin D-23-17 that would cover my vehicle and pertains to back glass water…”

“I am writing to express my concern about vehicle warranty coverage being provided by RAM (Stellantis NA) on their vehicles. I have a 2021 Ram 1500 which has a motor generator unit (MGU) which has failed due to a defect with the bearings. This has been diagnosed by the dealership and identified as covered under the emissions warranty. This diagnosis was made by Kolosso Ram in Appleton, Wisconsin in June of 2026. At this time I was advised that it could be a 6 to 8 month wait for parts because of a parts shortage due to the demand for the replacement part. My vehicle has been out of service since April while I maintain loan payments, depreciation of value, insurance and have no vehicle for transportation. A call to Ram was unsuccessful on two occasions to obtain any kind of relief in form of loaner vehicle or faster procurement of the part. Ram continues to build vehicles with this MGU unit while customers are stuck with inoperable vehicles some of with are still under original warranty or covered by the emissions warranty. The failure of Ram to ensure that customers have working vehicles is causing undue stress both emotionally and financially. This is also a…”

“The contact owns a 2021 Ram 1500. The contact stated that while attempting to start the vehicle, the instrument panel lights illuminated but the vehicle failed to start. The battery was replaced but the failure persisted. The vehicle was towed to the local dealer, who diagnosed that the RF Hub had failed and needed to be replaced. The vehicle was not yet repaired. The failure mileage was 81,000.”

“I purchased a new 2026 Ram 1500 Rebel Crew Cab 4x4 from the John Heister Dodge Ram dealership, in [XXX] on XXX. The following day, I day i was notified of an open safety recall (NHTSA 26V-531) affecting the vehicle's rear visibility/backup camera system, which under certain conditions may fail to display the rearview image during a backing event. I later confirmed that this recall was posted on XXX -- four days before I purchased the vehicle. The dealer, John Heister Dodge Ram, did not disclose this open recall at any point during the sale, and the vehicle was sold to me with the defect unrepaired. This is a known safety-related defect, as new vehicles are required to have open recalls repaired before delivery. The recall remedy has not yet been performed on my vehicle.”