2021 RAM 3500 Complaints

View complaints related to 2021 RAM 3500. The complaints found here are submitted by actual consumers with first hand experience. There are more than 60 complaints submitted for the 2021 RAM 3500. You can submit your own complaint to the NHTSA or call the Hotline, Monday-Friday 8am to 8pm at (888) 327-4236, TTY: (800) 424-9153.

  • 2021 RAM 3500
    - Franklin, TN

    The contact owns a 2021 Ram 3500. The contact stated that while reversing, the rearview camera failed to display an image, compromising the back over prevention system. No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 24V436000 (Back Over Prevention); but the VIN was not included. The manufacturer was not notified of the failure. The failure mileage was unknown. The VIN was not available.

    Source: HOTLINE VEHICLE OWNERS QUESTIONNAIRE
  • 2021 RAM 3500
    - Merlin, OR

    Vehicle died in a busy intersection coming off the freeway. Light flashed that indicated it was an issue with the electronic throttle control. The safety of myself and others was put at risk due to the posted speed of the road and multiple lanes from 4 directions. I had to remain in my vehicle to make sure I was not hit by another vehicle and due to the vehicle issue, I was impeding traffic. Lithia Dodge of Grants Pass, OR stated they could not make an appt for the vehicle to get looked at for 2 weeks out, scheduled 8/22/25. Dealership seems to think this is not an issue with safety and this issue can occur while the vehicle is in motion which is a huge safety issue. No warning lights flashed before the first one indicating the vehicle would shut down/lose all power.

    Source: NHTSA WEB SITE
  • 2021 RAM 3500
    - Redwood City, CA

    Failure of hydraulic lifters and camshaft in Cummins 6.7 liter diesel engine of 2021 RAM 3500. Engine exhibited significant ticking noise and the engine does not work properly, putting the safety of driver and passengers in vehicle at risk. Vehicle is not driveable. This issue has been confirmed by the RAM dealership in Livingston, Montana. The 2021 RAM 3500 truck has been sitting at the RAM dealership for the past seven weeks awaiting parts and a fix that RAM trucks is still trying to figure out. Apparently, this has become a common problem with the RAM Cummins 6.7 liter diesels from model years 2019 through current 2025 models, including 2021. The RAM dealership in Livingston, Montana has five separate RAM Cummins 6.7 liter diesel trucks with the same issue awaiting parts and a fix from RAM.

    Source: NHTSA WEB SITE
  • 2021 RAM 3500
    - Findlay, OH

    Nexen Roadian HTX RH5 LT235 / 80 R 17. While driving down interstate and pulling a 21,000 lb GVWR fifth wheel trailer, the truck began vibrate. After stopping it appeared that the front passenger tire was out of round. This was confirmed after jacking up the vehicle. Suspect internal damage to the radials. The tire had a total of 16,600 miles on it. Tire had cold pressure of 80 psi and was just checked 4 days prior to the incident. Luckily, the issue was discovered prior to a catastrophic failure, so no damage or accident occured for this particular failure.

    Source: NHTSA WEB SITE
  • 2021 RAM 3500
    - Little Elm, TX

    I powered on the truck. Upon ignition check engine light, along with ABS, 4WD, traction control came on. Lights for the forward collision and adaptive cruise control illuminated. ABS system in the truck is no longer functioning causing the brake pedal to pulsate and lose pressure. Dealer diagnosed the troubleshooting codes and determined the ABS and the HCU (Hydraulic Control Unit) need to be replaced.

    Source: NHTSA WEB SITE
  • 2021 RAM 3500
    - Live Oak, FL

    Nexen LT235/80R17 2 blow out's and one tire failure. factory installed tires. I have had 2 blowouts on the right front of my Ram 3500. I had discount tire unmount and re mount my spare on the blown-out tire wheel (for appearance purpose) so my spare is now another brand, the spare Nexen that replaced the blow out also blew out within ~2000 miles. I took the vehicle to Walts Live Oak Ram to inspect the vehicle for a cause of 2 tires blowing in the same position on the vehicle, they also checked the alignment and found nothing. yesterday [XXX] pulling a trailer to Jacksonville I noticed about 50 miles into the trip a slight shudder in the steering wheel and I pressed on. On the return trip the shudder in the steering was substantially profound and the driver side view mirror was bouncing up and down, the passenger side was not, and my hands were getting numb, I slowed to 50 from 70mph and continued, the shuddering eased but was clearly still there. today I took the truck to discount tire Lake city Fla. and asked them to replace the Nexen as I felt it was failing from looking at the tire and running my hand along the tread it didnt feel normal and the tire was hot compared to the passenger side. I asked discount to spin the Nexen on the balancer and they did, it confirmed the tire was failing and was unable to be balanced. the new tire cured the problem. the truck today clocked 37k miles to give you some perspective on mileage and primary use is for towing trailers, 42' 5th wheel, 16' box or flatbed trailer. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6

    Source: NHTSA WEB SITE
  • 2021 RAM 3500
    - Merlin, OR

    2021 Dodge Ram drivers side A-pillar handle is detaching due to failing plastic clips

    Source: NHTSA WEB SITE
  • 2021 RAM 3500
    - Lafayette, IN

    Driver power seat started moving forward on its own until it was all the way forward, would not move backwards with the button. It pinned my legs to the dash, preventing me from reaching the throttle or brake pedal

    Source: NHTSA WEB SITE
  • 2021 RAM 3500
    - Hallsville, TX

    The rear driver’s side and rear center seat belts no longer latch. When sliding the belt into the recepticle it fails to “click” or connect. The belt pulls right back out. It does not work at all, it is reproducible every time. The dealer will charge a lot of money to say that they ran diagnostics to tell me what is obvious, so I have not brought it in yet. This is a serious safety risk since the law requires passengers to wear seat belts for safety reasons and this basic safety equipment fails. The vehicle is less than 4 years old and the rear belts have not been used all the time as there were not always passengers. Also, there is no damage to them. I would like it fixed asap and believe the equipment is faulty since two of the three rear belts have failed.

    Source: NHTSA WEB SITE
  • 2021 RAM 3500
    - Midway, KY

    The contact owns a 2021 Ram 3500. The contact stated that after starting the vehicle, the accelerator pedal was depressed, but the vehicle failed to drive forward or to reverse. The RPM was raised high, and the check engine warning light was illuminated. The vehicle was taken to the dealer, where it was determined that the transmission needed to be replaced; however, the parts were on backorder. The failure recurred, and the vehicle was towed to the farm. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was opened. The failure mileage was approximately 64,000.

    Source: HOTLINE VEHICLE OWNERS QUESTIONNAIRE