Which parts fail
Components named in complaints (service brakes, ABS, rotors and pads, parking brake).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2020 Ram 1500 owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2020 Ram 1500. The contact stated while driving approximately 65 MPH, the vehicle started to lose motive power. The contact stated that the "parking brake temporarily unavailable" and "ABS" warning light was illuminated. The vehicle regained motive power and the warning lights ceased; however, the failure recurred. The contact stated that the failure had occurred eight times in one day. The contact had taken the vehicle to a local dealer, where it was diagnosed and determined that the mechanic was unable to duplicate the failure. The dealer was unable to retrieve a fault code. The vehicle had not been repaired. The manufacturer had been informed of the failure. The failure mileage was approximately 24,000.
The contact owns a 2020 Ram 1500. The contact stated that while driving at approximately 5 MPH, the brake pedal was depressed, the "Depress the Brake pedal" warning light illuminated and the message "Brake Inactive" was displayed. The contact towed the vehicle to a local dealer, where it was diagnosed and determined that the ABS module had failed and needed to be replaced. An unknown brake part was replaced, and brake fluid was added. The contact stated that the failure persisted. The contact was informed that the ABS module was not available, and it was unknown when the part would be available. The manufacturer had been informed of the failure. The failure mileage was approximately 132,000.
The contact owns a 2020 Ram 1500. The contact stated while driving 65-70 MPH and towing a trailer, the traction control engaged, and the vehicle went into LIMP Mode. The Police had aided with getting the vehicle off the roadway. The traction control and engine warning lights were illuminated. The vehicle was taken to the local dealer, and two unknown local dealers were unable to determine the failure. The vehicle was not diagnosed or repaired. The brake control was previously replaced. The manufacturer was contacted and referred the contact to the dealer and the NHTSA Hotline for assistance. The failure mileage was approximately 2,500.
Truck was going at 40 MPH and power steering went out, brakes went out and truck started to accelerate resulting in a serious crash. Vehicle was totaled out but not inspected by Dodge. There was no warning of any problems with truck.
The electronic gear selector on my 2020 Ram 1500 intermittently displays a "Shift to Park" warning while the vehicle is in motion, specifically during downshifting or braking. Each occurrence is accompanied by a physical jerk or lurch, consistent with the vehicle momentarily engaging an unintended gear. The warning clears without driver input. These events occur during active deceleration and represent a loss of predictable vehicle behavior, creating a serious risk of rear-end collision or loss of control. The problem has not been resolved. A dealership inspected the vehicle and recommended a Transmission Control Module (TCM) software update referencing TSB 21-019-24, to be performed at the owner's expense. No root-cause diagnosis was provided. The underlying hardware cause, most likely the gear selector position sensor or transmission range sensor, was not confirmed or ruled out. …
While I was driving warning lights came up on the dash. Traction control, parking brake warning, red voltage. When I exited the freeway, and used the brakes to slow down , the truck was accelerating at the same time . I let go of all the pedals, and the acceleration continued with no feet on pedals . When I got to work, I put it in park . Took it out of park, and the truck started accelerating again on its own at a fast rate. Put it in park, put it in reverse, and the truck started accelerating fast again, in reverse, until I slammed on the brakes to stop the acceleration and put it into park . This is the second time. First time was few months ago, same issue. Dealer looked at it, couldn't duplicate it, cleared the codes and said if it happens again they'll have to call an engineer from Chrysler. …
This is the second time this has happened (03APR25). The first time this occurred, 20JUL25, I had to pay (Bill attached) to have the ABS Module replaced. Today several service lights came on not limited to: Service 4wd, 4wd Trans Case overheat, stabilization system, and the traction control light came on along with the 4wd High light and both the 4wd High and 4wd Low indicator lights were all flashing. When parked the emergency parking brake was automatically set. (break) I have all the documentation from the first occurrence and an additional recall notice (Attached) of which states contact the dealer, whom said that it was not their responsibility. Then I contacted Stellantis recall office, and they said they would get back with me and never have and today most all the sensor faults flashed on the display. The truck locked in 4 high up until I parked it.
On [redacted] driving from Joplin MO to McQueeney Tx on [redacted] at approximately [redacted] voltage dropped to 10.3 in Waco TX. I was to get to safe area. Vehicle lost steering, low braking and dim lights. Purchase a new battery from local Wamart. Vehicle started, working good, upon entering San Marcus, Tx low voltage again 10.0 volts. Had to get off hwy and pulled into gas station. Vehicle completely dead. Has it towed McQueeney tx . Contacted dealer next day engine generator kit unavailable. Contacted Mopar, order part on 9/16/2025. Still to dated no updated from Mopar. When engine generator shut down you have no steering control and very low braking power.
ABS module/hcu failure Jan 13, 2025. No indication of problem prior to failure. When failure occurred, vehicle was traveling around curve in road at 50 mph when all warning lights on dash lit, loss of power steering, engine shutdown, loss of power brakes. Vehicle had to be towed home then to dealer (Davis Moore Ram Wichita Ks). Dealer diagnosed as ABS module with possible HCU failure. Told by dealer no parts available for repair, I confirmed with on-line search with other dealers. ABS Module Part # 68728132AA is not being made available to any dealers (backordered) for the repair. FCA is calling it under review, has been years for many people who still have no fix. Dealer had me prepay for part.
I am submitting a report regarding the hacking of my vehicle that has persisted over the past five years. I have previously stated that my scammer, [redacted] , along with her associates, continues to remotely manipulate the gear of my vehicle while I am driving. Furthermore, they are targeting the lighting and dome lights in my vehicle in an attempt to jeopardize my safety. Additionally, the manufacturer experienced a data breach in September 2025. Please feel free to contact me at [redacted] .
Brake complaints in other 1500 years
Frequently asked questions
How common are brake problems on the 2020 Ram 1500?
NHTSA has 42 complaints about the brakes of the 2020 Ram 1500, 7% of the model year's 640 complaints. The component named most often is antilock/traction control/electronic limited slip (1 mentions).
Is there a recall for 2020 Ram 1500 brake problems?
No. NHTSA lists no brakes recall for the 2020 Ram 1500, though it has 14 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 2020 Ram 1500 brake problems start?
Half of the complaints with a recorded mileage happened before about 3,000 miles, and 94% before 25,000 miles.
Is it dangerous?
Owners linked 8 crashes, 0 fires and 3 injuries to brakes 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.