2018 Ram 2500: multiple warning lights

Filed Mar 6, 2026 · Brakes · 96,000 miles · OK

The contact owns a 2018 Ram 2500. The contact stated that while driving at an undisclosed speed, several warning lights were illuminated. The vehicle was taken to the dealer, where it was diagnosed with ABS failure. The contact was informed that the ABS needed to be replaced. The vehicle was not repaired. The contact was informed that the failure was a known failure with similar vehicles. The contact later received notification of the federal safety agency Campaign Number: 24V896000 (Service Brakes, Hydraulic); however, the part to do the recall repair was not yet available. The vehicle was taken to the dealer several times; however, the contact was informed that the part was not yet available. The contact stated that the vehicle was unsafe to drive for long distances because of a persistent failure. The manufacturer was made aware of the failure. Additionally, the contact was informed that the dealer could repair the vehicle if the contact paid out of pocket for the repair. The failure mileage was approximately 96,000.

Filed Jan 29, 2026 · Brakes · MI

My truck has had the issue stated in recall C4B since November of 2024, per the recall a solution was to be provided by first quarter of 2025. It is now first quarter of 2026, the recall still shows no parts available, dealers state no parts are available and this is a ridiculous amount of time to remedy a safety recall. Truck currently has multiple lights/issues related to the problem, no traction control and no cruise control for over a year and a half now. This problem needs to fixed ASAP, it's ridiculous.

Filed Jan 16, 2026 · Brakes · VT

The contact's son owns a 2018 Ram 2500. While the son was driving at an undisclosed speed, the brake pedal was depressed; however, the vehicle failed to stop as intended. The vehicle eventually slowed down and came to a complete stop. The contact stated that several warning lights were illuminated. The owner had received notification of the federal safety agency Campaign Number: 24V896000 (Service Brakes, Hydraulic); however, parts were not yet available for the recall repair. The vehicle was taken to an independent mechanic, where it was diagnosed with a failed Hydraulic Electronic Unit Control. The contact's son was advised to contact the dealer for assistance. The dealer was made aware of the failure. The contact's son was informed that the vehicle was not a pickup. The contact's son was informed that the repair could be performed now if the vehicle was not a pickup. In addition, the contact's son was offered the option to pay out of pocket for the repair and wait to be reimbursed when the remedy became available. The manufacturer was made aware of the failure. The contact's son was informed that the parts were only available for pickup trucks. The contact's son was informed that he could pay out of pocket for the repair and wait for reimbursement. The contact stated that the vehicle had been inoperable since November 2024. The failure mileage was unknown.

Filed Apr 27, 2025 · Brakes · IN

Mopar part numbers 68143491AA Control-Anti-lock brake system and Mopar part number 68347098AB Module-Anti_lock brake system both failed and were replaced/repaired by dealer under warrranty where I purchased the truck. Truck had 8,223 miles on it. Brakes and traction control was compromised. Numerous warning lights and warning tones were observed.

Filed Feb 20, 2025 · Brakes · WA

Approximately January 2022, several warning lights illuminated on my dash in conjuction with a warning chime. The warning lights and chime occurred intermittently. My truck was taken to the dealership with only 9710 miles on the odometer. A scan showed a code of C0020-01 ABS pump motor control general electrical failure. Approximately 5 months later a new part arrived and was installed on the truck. There were no issues until February 2025 when the dash warning lights and chime reappeard similar to the first occurrence. The odometer reading now at 16.5K. I have contacted the dealership that performed the original work and they informed me that there is currently no repair for this issue. Having no ABS braking system is a major safety issue, especially when pulling a large travel trailer.

Filed Oct 17, 2024 · Acceleration, Brakes · WI

While driving the PU with my camper in tow, the ABS and Service electronic bakes system warning were displayed on my dash. Then they went out. This process repeated several times over the next 3-4 minutes. Then the warning lights came on and stayed on. It remained that way until I parked on the side of the road and turned off the vehicle. I checked the undercarriage for any signs of any visible damage to the braking system. None was readily identifiable. Upon restarting the vehicle, all warning lights were extinguished. I proceeded to the campgrounds with out further warnings on this system. The next day, with out the camper in tow, the warning lights were again active flashing on and off for a period of about 3-4 minutes before they again came on and stayed on. This process repeated itself as I would turn off the vehicle and then restart it. Upon parking for the evening they were still on. When I started again the next day, they were off.

Filed Oct 7, 2024 · Brakes · KY

ABS/TRACTION CONTROL LIGHTS and alarm started in January 2022 the vehicle only had 21,460 miles on it so I took my 2018 Ram to dealership to get looked at and they diagnosed the faulty part as ABS HCU/MODULE. The vehicle was under warranty so they fixed it for free. October 01 2024 the same thing happened vehicle with 38,000 miles all the lights started flashing and alarming while I was towing my camper I've heard that when this happens it disables cruise control and the trailer braking system. THATS VERY DANGOUS WHEN PULLING A 8,000 POUND CAMPER!! Now I've heard that the part is on back order and 'm lost on what to do.

Filed Jul 31, 2024 · Brakes · NH

ABS Hydraulic Control Unit failed as it has done on millions of other rams. Yes I will keep the old part incase someone needs proof. Cruise control does not work. ABS and traction control also does not work posing all sorts of possibilities for accidents. Independent service center No but the manufacturer knows its an issue. The dealers can only order 1 unit every 7 days. Every dealer in the area is out of stock or has units on the shelf already assigned to other vehicles. Multiple Warning lights come and go on the dash as well as a ding to distract you. "service anti lock brake system" illuminates on the console.

Filed May 28, 2024 · Brakes · NC

We have been waiting on an improved HCU for the ABS system for approximately 18 months now to no avail. The ABS system is constantly failing and throwing codes related to the HCU and ABS module which shuts down the ABS system as well as cruise control and the dash lights up like a Christmas tree more times than I can count. My local dealership has no information on when parts will be available to fix this issue. The HCU has already been replaced once with the old stock unit and it has failed. This is unacceptable and a major safety concern since we are frequently hauling horses. Any information related to a fix would be greatly appreciated since RAM doesn’t seem to care at all.

Filed Mar 19, 2024 · Acceleration, Brakes · NC

My 2018 RAM 2500 has 30,176 miles on it. Two years ago the HCU and module controlling the ABS system failed and was replaced. When the system fails numerous lights and warning chimes activate and the cruise control stops working. The system has failed again and the dealer tells me it will take 45+ days to get the parts necessary to repair the ABS system. After researching online I discovered an open class action lawsuit against FCA for this problem. I also discovered that this is a common problem with 2500 and 3500 RAM trucks after reading owner forum sites but so far no recall has been issued by NTHSA. This is a major safety issue for owners and needs to be fixed.

Filed Jan 25, 2023 · Acceleration, Brakes · NY

Beginning at almost exactly 28000 miles, this truck intermittently shows a warning for a fault with the “electronic braking system” and the “antilock braking system” where there are multiple warning lights and tones, and the ABS, traction control and cruise control becomes inoperative. This has increased in frequency and occurs in any conditions at random intervals. Recently it has come on and off as many as 20 times in a 12 mile trip. I am aware of a current the federal safety agency investigation into these vehicles as well as a class action lawsuit against Stellantis. I have reported the condition to my dealer who advised it is not covered under warranty and no parts are available to repair it.

Filed Nov 2, 2021 · Transmission · VA · crash

The contact called inquiring about a Law Enforcement vehicle (2018 RAM 2500). November 2020, vehicle shut down while traveling up a road. “Lost all PCM communication.” Instrument cluster was on, but vehicle would not start, multiple warning lights were illuminated. The vehicle was not drivable. Towed vehicle to Flower Motors (RAM) in Montrose, CO where it was diagnosed with needing a PCM replaced. The vehicle was repaired, however it continued to experience the same failure. July 2021 while the same Law Enforcement Officer was traveling at 30 mph in a 35-mph zone into a sharp right turn, the vehicle "lost all the PCM communication". The Law Enforcement Officer could not stop, due to no brakes and had a difficult time turning the vehicle. The Law Enforcement vehicle crossed the road into the oncoming lane of traffic and off the shoulder into Sagebrush. The Law Enforcement Officer was able to steer to the right and drove back onto the road and across both lanes of traffic, exiting off the road surface and into more Sagebrush. The Law Enforcement vehicle finally came to a stop. Multiple warning lights illuminated. The air bags did not deploy. The Law Enforcement Officer was not injured nor sought medical attention. No police report was filed. The Law Enforcement vehicle was not drivable and had to be towed Flower Motors (RAM) in Montrose, CO where it was diagnosed with needing the PCM replaced for a second time. The Law Enforcement vehicle was repaired, however, it continued to experience same failure. August/September 2021, the Law Enforcement vehicle again “lost all the PCM communication”. The Law Enforcement Officer was pulling up to a highway getting ready to merge onto the highway when the Law Enforcement vehicle shut down. The Law Enforcement vehicle was not drivable and was towed to Berthod Motors (RAM) in Glenwood Springs, CO where it was diagnosed with needing the PCM to be replaced for a third time. Multiple warning lights were illuminated. November 2021, the Law Enforcement vehicle was being driven approx