2018 RAM 2500 vehicle speed control problems

What owners report

• “This recall has been in effect for almost two years. I have been affected for the past year with almost constant warning alarms distracting my attention to drive. The Chrysler Mechanic did diagnose that my ABS system has failed but t hat a remedy was, and still is not available. In the meantime I rarely my 2500 RAM Diesel because I have no ABS, cruise control or the ability to disable the traction control. The mechanic was not able to turn the alarm off and turning up the radio is not a safe…”

  NHTSA complaint · filed 09/18/2026

• “The contact owns a 2018 Ram 2500. The contact stated that while driving at various speeds with cruise control engaged, there was an abnormal dinging sound coming from the vehicle, and the cruise control disengaged. The vehicle started coasting. The driver reset the cruise control. The ABS message was displayed. The contact received notification of NHTSA Campaign Number: 24V896000 (Service Brakes, Hydraulic). The failure recurred while on the interstate, on country roads, or pulling out of the dr…”

  NHTSA complaint · filed 09/16/2026

• “I have the active recall associated with the vehicle listed. It’s been nearly 2 years with the active abs service light, traction control light, and inoperative cruise control due to those lights. Stelantis is not very helpful. Will not fixit yet. But says I can pay myself and some or all may be reimbursed. There is no reason it should take this long. Endangering lives potentially. I sent truck pulling all the time. And you buy these things with these safety options that should work. To be …”

  NHTSA complaint · filed 09/05/2026

• “I have been waiting on the C4B recall for nearly two years with no parts available still. My truck has no ABS, traction control, or 4WD. This is a 2500 heavy duty truck meant for pulling trailers and heavy payloads. This recall has rendered the vehicle useless. I can't trade it in due to the ongoing recall, it is not safe to drive, I am at an extreme financial loss due to Stellantis' negligence. How has the US government allowed this issue to last for so long? How many unsafe vehicles are curren…”

  NHTSA complaint · filed 08/27/2026

• “ABS, Traction Control warning lights on dash and loss of cruise control function causing sudden deceleration on highway. The dash warning includes incessant dinging. This manufacturer has been NEGLIGENT AND INCOMPETENT in providing resolution.”

  NHTSA complaint · filed 08/21/2026

• “The Hydro Boost Pump Port Tube Assembly (Mopar P/N 04581758AA / 4581758AA) on my 2018 Ram 2500 6.7L Cummins has failed and requires replacement. My concern is that this component is part of the hydraulic assist system supporting critical steering/braking functions. A failure or loss of hydraulic pressure could result in significantly increased steering or braking effort and create a serious safety hazard, particularly while towing, carrying a load, or traveling at highway speeds. I am requesting…”

  NHTSA complaint · filed 08/19/2026

• “ABS, Traction controle and 4 wheel drive system shut down. the truck is sending code- C0031-1D directly related to C4B recall. The dealerships have no fix and offered no support or guidance but did agree that the truck is unsafe to drive as is.”

  NHTSA complaint · filed 08/01/2026

• “The electronic throttle control light and check engine light are on. I took it to a mechanic and had the accelerator pedal replaced. The lights remained on and the truck remains in "limp mode" and will not go over 59mph. The mechanic stated that this is due to the unresolved recall problems with the traction control and anti lock braking system, and the HCU needing replaced. These components and labor are over 2-3 thousand dollars! I have called NHTSA and the manufacturer with questions and…”

  NHTSA complaint · filed 07/28/2026

Unverified owner reports from NHTSA's public complaint database.

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