Which parts fail
Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2021 Ram 1500 owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2021 Ram 1500. The contact received notification of NHTSA Campaign Number: 24V653000 (Service Brakes, Hydraulic, Electronic Stability Control (ESC); however, the part to do the recall repair was unavailable. The local dealer was contacted, and it was confirmed that the part was not available. 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 driving at an undisclosed speed, the message "Battery Low Voltage" was displayed and the vehicle experienced loss of power steering functionality and decelerated. The vehicle was taken to the local dealer, where it was diagnosed and determined that the failure was related to the recall. …
The contact owns a 2021 Ram 1500. The contact received notification of NHTSA Campaign Number: 24V653000 (SERVICE BRAKES, HYDRAULIC, ELECTRONIC STABILITY CONTROL (ESC). The contact stated that water had entered the vehicle through the rear window. The contact stated that the radiofrequency (RF) module had short-circuited. The contact stated that the key fob failed to function as intended and the steering wheel and brakes seized. The contact used the physical key to unlock the door. The vehicle was towed to an independent mechanic where it was diagnosed that the radiofrequency module (RF) had short-circuited. The radio-frequency module was replaced, and the key fob was reprogrammed. The manufacturer was not made aware of the failure. The failure mileage was approximately 61,000.
The contact owns a 2021 Ram 1500. The contact stated that while driving at an undisclosed speed, the contact noticed an unusual popping sound. The low battery and check engine warning lights were illuminated. In addition, the battery lost power. The vehicle was driven to the shoulder of the road, and the vehicle was turned off. The contact stated that while attempting to restart the vehicle, the vehicle failed to restart. The vehicle was towed to the residence. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The dealer was made aware of the failure. The contact was informed that the failure was a known failure with the vehicle. The manufacturer was made aware of the failure, and a case was filed. The failure mileage was approximately 78,900.
The contact owns a 2021 Ram 1500. The contact stated that an Over-the-Air update was been performed on the vehicle overnight and the following day the battery was drained and needed to be replaced. The contact drove another vehicle to an independent mechanic and purchased a new battery. After replacing the battery, an error code for a firmware failure was displayed on the instrument panel. As a result of the message, the radio module became defective, and the back over prevention system failed to operate as needed. The vehicle was taken to a dealer who was unable to diagnose or repair the vehicle. The manufacturer was notified of the failure and referred the contact to the dealer for assistance. The vehicle was not yet repaired. The failure mileage was approximately 50,000.
The contact owns a 2021 Ram 1500. The contact stated while reversing approximately 3 MPH into a parking space, the vehicle stalled. The contact stated that the steering wheel seized, and all four wheels locked up. The contact stated there was no warning light illuminated. The contact attempted to restart the vehicle, but the vehicle failed to start. The vehicle was towed to a local dealer who diagnosed and determined that the radio frequency module had been short circuited by water that had entered the vehicle either from the rear sliding window or the rear brake light assembly located at the rear and on top of the vehicle. The vehicle was repaired. The manufacturer was not informed of the failure. The failure mileage was 45,070.
I had issues with the electrical systems on various occasions. There were times when the vehicle shut down in middle of driving while other times some functions such as keyless entry or auto braking didn't work. I took the vehicle to the dealership on 3 separate occasions and they said that they could not recreate the issues but rewired the system. I still had issues and was told that as long as the engine light is not blinking it is safe to drive. On 4/11/2023 while driving full speed on the highway, the electrical system stopped and i lost brakes and steering. This caused me to crash into the car in front of me. In addition, the auto braking did not engage and the airbags did not deploy
The contact owns a 2021 Ram 1500. The contact stated that while driving at an undisclosed speed, the check air bag warning light illuminated. The contact stated that the vehicle had a history of wiring failures and that the air bag wiring harness had been replaced three times; however, the failure persisted. The vehicle was taken to a dealer, where it was diagnosed with electrical wiring failure, and the wires were zip-tied in place. The vehicle was repaired, but the failure persisted. The manufacturer was not notified of the failure. The failure mileage was 70,000.
The contact owns a 2021 Ram 1500. The contact stated while driving at approximately 15 MPH, there was an abnormal sound intermittently coming from the engine compartment. Additionally, the contact stated that the navigation system and the climate control system was inoperable. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic where it was diagnosed that the alternator needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 69,000.
The contact owns a 2021 Ram 1500. The contact stated while driving 72 MPH, the vehicle lost motive power and stalled without warning. The contact was able to pull over on the side of the road safely and restarted the vehicle and the vehicle momentarily started operating normally, but the failure reoccurred. The vehicle was taken to the dealer and the dealer stated no failure was found but the mechanic suggested that the ignition system needed to be replaced. The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was 36,000.
The contact owns a 2021 Ram 1500. The contact stated that while driving at various speeds or while idling, the contact observed a clicking sound coming from the engine compartment. The vehicle was taken to an independent mechanic, where it was diagnosed and determined that the alternator was faulty. The contact was informed that the alternator needed to be replaced; however, the part was indefinitely on backorder. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 81,000.
Electrical complaints in other 1500 years
Frequently asked questions
How common are electrical problems on the 2021 Ram 1500?
NHTSA has 198 complaints about the electrical system of the 2021 Ram 1500, 29% of the model year's 683 complaints. The component named most often is alternator/generator/regulator (3 mentions).
Is there a recall for 2021 Ram 1500 electrical problems?
No. NHTSA lists no electrical system recall for the 2021 Ram 1500, though it has 15 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2021 Ram 1500 electrical problems start?
Half of the complaints with a recorded mileage happened before about 45,000 miles, and 42% before 25,000 miles.
Is it dangerous?
Owners linked 2 crashes, 3 fires and 4 injuries to electrical system problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.