2021 Ram 1500: whining or grinding noise

Filed Oct 6, 2025 · Transmission · 140,000 miles · WI

The contact owns a 2021 Ram 1500. The contact stated that while driving 40 MPH or slower, there was an abnormal whining sound coming from the engine compartment. While attempting to accelerate, the vehicle intermittently hesitated and slightly surged forward before accelerating. The failure had become more persistent over time. There were no warning lights illuminated. The contact found information related to the federal safety agency Campaign Number: 23V265000 (Power Train); however, the VIN was not included in the recall. The vehicle was taken to be diagnosed, and the contact was informed that the motor generator had failed and needed to be replaced. The vehicle was in the process of replacing the motor generator unit. The manufacturer was not informed of the failure. The failure mileage was approximately 140,000.

Filed Sep 17, 2025 · Electrical, Engine · MN

1. The Motor Generator Unit (MGU) failed on my 2021 Ram 1500. The component is still installed in the vehicle and is available for inspection upon request. 2. The MGU failure caused a loud whining noise that worsened over two weeks, raising concern that the part could seize or fail while driving. A sudden failure could result in loss of vehicle power or drivability, creating a dangerous situation for me and others on the road. 3. Yes. A certified Ram dealership inspected my vehicle and officially diagnosed the MGU as defective. 4. Yes, the dealership confirmed the failure. To my knowledge, it has not been inspected by the manufacturer, police, or insurance representatives. 5. There were no warning lamps or dashboard messages. The only symptom was a whining noise that started faintly and gradually increased over the course of approximately two weeks before the dealer diagnosis.

Filed Jun 25, 2025 · Transmission · MA

In April 2025 I reported a whining noise coming from the truck (under the hood), less than 50,000 miles. Dealer determined that the problem was a failing bearing in the Motor Generator Unit (MGU). They informed me that the truck was still under warranty and would be replaced... but that the part was on backorder with no date of arrival. They offered no rental and it is now 2 months later and the problem is worse. They tell me I can continue to drive it until it fails (REALLY?), that is the plan. Drive it until it dies and then what! It is now 2 1/2 months later, i try not to drive it due to the loud noises and fear of being stranded. They still have no eta on parts and have offered not help in resolving the issue. As I search online I see that this is not a new issue and that many people are having the same problem, no recall, no bulletin, no help! Just a $55,000 paperweight that I am paying for that sits in my driveway.

Filed Mar 17, 2025 · Transmission · GA

Upon starting the vehicle, shifting into drive from park, and depressing the gas pedal, the vehicle would not shift out of first gear into higher gears. The engine began to whine and the RPM gauge registered much higher than when the vehicle typically shifts into higher gears during acceleration. Upon realizing, I pulled over and shifted from Drive to Park. I then shifted back to drive and the vehicle operated normally. This is the first time the vehicle has behaved in this manner, although there have been times when the transmission feels as if it is not shifting as smooth as it should.

Filed Feb 11, 2025 · Electrical · NY

Ram eTorque system failed. Alternator/MGU unit has a bad bearing and failed. This is a safety issue because the truck could lose power while driving. Unit start whining and screeching then eventually stops. Voltage reading starts going down and truck eventually won't run.