2018 RAM 2500 Electrical System Problems

I am submitting this complaint about Safety Recall C4B / NHTSA 24V‑896 for my 2018 Ram 2500 (VIN: 3C6UR5CL4JG333543). I am active‑duty military living in Virginia; the truck is registered in Tennessee. FCA’s recall notice says the brake hydraulic control unit (HCU) may fail, causing intermittent then permanent loss of ABS, ESC, and traction control, and that this “may cause a vehicle crash without prior warning.” My truck shows as affected, but I have been unable to get the recall repair. The notice also states that the remedy is “not currently available” and that FCA will contact me when it is. As of February 2026, more than a year after the recall was initiated, I am still being told that parts are unavailable and there is no firm ETA for when the repair can be performed. In the meantime, I continue to drive with a known safety defect FCA has...

The warning lights have been on for months indicating the ABS is malfunctioning, we have had it to the dealership garage several times and they keep telling us we are on the list but the parts are not available even though it has been over a year. If they fail completely we will have no control over the braking system which can cause a vehicle crash. We have to limit the driving we do with our vehicle because of the danger that is involved. We have another issue for our vehicle: I contacted Chrysler twice with no response. and addressed it with our dealership and they have not helped. We have reported this issue to Chrysler about our 2018 Dodge Ram 2500 6.7L Cummins diesel concerning the Particulate Matter Sensor. This has been ongoing for a year and Chrysler is aware of this problem and has issued recalls on them...

Been getting abs warning alarm for over 2 years and no fix in site. Also cruise does not function when in alarm been living with this alarm for 2 years or more. I would like to sell vehicle but cannot with this unrepaired recall. Need some action asap.

The vehicle had multiple unresolved safety defects from the time of purchase. The radio and electrical system never functioned correctly and could not be repaired despite repeated dealer visits. The stabilizer bar failed and fell out while driving, causing loss of steering stability. The vehicle is currently subject to an open federal safety recall for ABS/ESC/traction control loss with no repair remedy available. These defects created a serious crash risk and caused loss of safe use of the vehicle. The manufacturer and authorized dealer failed to repair the vehicle.

I own a 2018 Ram 2500 equipped with the 6.7L Cummins diesel engine that I purchased brand new in Iowa. For approximately the last four to five years, my vehicle has displayed persistent warnings including “Service Electronic Braking System,” ABS warning light, and traction control warnings, accompanied by constant audible alerts. As a result, multiple braking safety systems are disabled, including anti-lock braking, stability control, traction control, and cruise control. For several years I contacted Ram dealerships and the manufacturer regarding this issue and was repeatedly told that repair parts were unavailable. During this time, widespread reports of identical failures were being discussed on owner forums and among dealerships. A federal safety recall was eventually issued for the ABS control module, and I received my official recall notification letter approximately one year ago. Despite the recall being active, the manufacturer and local dealerships continue to state that no replacement parts...

Service ABS light constantly alerting, every time I touch brakes. Loses cruise control. I called two local dealerships who tell me parts are unavailable. This is on recall, why aren’t parts available?

Recall/Campaign: Ram/Stellantis C4B Problem: “Dealer says remedy/parts are not available / cannot schedule recall repair.” This has been a problem since 2023. Have not had ABS for years or 4x4 and i live in a snow environment. My breaks and rotors are trash from not having ABS.

I am the owner of a 2018 RAM 2500 that is subject to NHTSA safety recall 24V-896 (manufacturer recall C4B), involving a potential failure of the Hydraulic Control Unit (HCU) affecting ABS, electronic stability control, and traction control systems. This recall has been active for over one year on my vehicle. Despite repeated contact with authorized RAM dealerships and the manufacturer, I have been informed that no repair remedy or replacement parts are available, and no timeline has been provided for when the recall can be completed. This is a brake-related safety recall, and the continued inability to repair the vehicle creates an ongoing safety risk. The manufacturer has not provided an interim remedy, loaner vehicle, or alternative solution. I am filing this complaint to document that the recall remains unresolved due to parts unavailability and to request NHTSA review of the extended delay in providing a safety remedy.

I am reporting ongoing safety concerns with my 2018 RAM 2500 (6.7L Cummins) related to repeated emissions/aftertreatment failures and the lack of timely repair options. These failures directly affect drivability and can create hazardous situations if the vehicle enters derate mode while towing or driving at highway speeds. Over the past year, my truck has suffered multiple emissions-related component failures, including DEF dosing issues, SCR/DPF system faults, repeated warning messages, and the threat of speed-limiting derates. The vehicle is used for normal personal use, is well-maintained, and has not been modified. Despite proper maintenance, the same types of failures continue to recur. A major concern is that local RAM dealers have extremely limited ability to service these issues in a timely manner. Appointments are often weeks out, and when the truck is already in a failure state it is unsafe to continue driving. I have previously reported safety-related defects to...

The Brake Hydraulic Control Unit (HCU) covered under Safety Recall C4B has been unavailable for several years, leaving my 2018 Ram 2500 with ongoing ABS, traction control, and electronic stability control malfunctions. This defect has already caused an actual accident. In January 2024, during snow conditions, the ABS and traction control failed while I was braking in my driveway. The truck slid uncontrollably and struck a tree, causing over $10,000 in damage that had to be repaired through my insurance. This incident occurred specifically because the brake and stability systems did not function properly. The issue continues to create serious safety risks, especially in winter. The warning lights for ABS and traction control are on constantly, accompanied by continuous dinging that is extremely distracting and stressful to drive with. The truck loses stability on snow or ice, braking distance is increased, and the vehicle behaves unpredictably. I am now driving...

Please add this to complaint number: 11702732 This is a supplemental complaint regarding the same safety issue I previously reported involving Safety Recall C4B on my 2018 Ram 2500 - complaint # 11702732 In addition to the safety concerns and the prior accident I described in my original complaint, the unresolved recall has also caused significant financial harm. I still owe approximately $15,100 on the vehicle and must make a $515 monthly payment. Because the recall remedy has been unavailable for years, I cannot legally sell or trade the vehicle, even though it should have substantial equity. The truck’s resale value has dropped due to the open safety recall with no remedy, leaving me financially stuck with an unsafe vehicle I cannot get rid of and a high payment that I currently cannot afford due to job loss. The unresolved recall continues to put me in danger during winter driving,...

I have a 2018 ram 2500 purchase from the dealership within the same week of purchase magically the ABS system failed driving down the highway in the middle of winter time kicking out cruise control and traction control causing me to almost crash on the highway and get hit by a semi Not only have I had the truck for almost 2 years unable to drive it I believe the dealership should never been able to sell me this vehicle with the known problems and what they already failing ABS system making me unaware of the issue Yes and the brake system not working in the truck sitting has caused other failures in the vehicle now a transmission shop told me the ABS failure affecting other parts of the truck caused the transmission brain to not work correctly and my warranty could not fix the transmission is corrected and fixed...

Recently the radio and display system in the vehicle stopped working properly. It was basically ghosting all commands. It could not be controlled by knobs, touch screen or voice command. the dealer stated that the screen delaminated and was causing the issue. This is a safety concern because the radio was calling 911 randomly and I was unable to stop it, it was turn on and off features in the vehicle. It's very dangerous. there is a wide know problem for these delaminating screens and this should be recalled and fixed.

My ABS module has an active recall. I have replaced brakes and rotors in the front and rear. I have had to resurface my rear rotors due to the issue. My breaks are locking up and causing issues. I can't back up my trailer without my breaks locking up. The recall has been active for almost a year without a resolution. This problem is unsafe and people's lives are at risk. Something needs to be done. I can't even buy an aftermarket updated part to fix this issue. Thank you!

My vehicle has a recall for a an ABS control module which affects, the ABS system, traction control, and cruise control system. The cruise control system will randomly turn off when the vehicle is at highway speeds causing a momentary struggle to keep control of the vehicle. The driver information display in the gauge cluster will randomly flash an error message with an audible "ding" which is highly distracting while driving. At times, this warning flashes every 3-5 seconds and lasts for 10-30 minutes at a time making it very difficult to concentrate on driving the vehicle. The traction control system fails when the message flashes which has been a problem on wet roads. The dealership has acknowledged the recall of the ABS module multiple times and indicated the manufacturer has not made a fix available for nearly a year. The issues with my vehicle are becoming more apparent and...

The 8.4 inch Uconnect touch screen is delaminating. This allows constant changes of most functions of the truck. Heating/defroster, radio, clock, Navigation etc all keep changing/beepinf/alerting on there own due to the defective u connect screen. This is very distracting and dangerous to drive status. The U connect keeps asking for the drivers attention. Constant changes and beeps to get the drivers attention and make selections on the U connect screen creates a crash risk. CHRYSLER knows this is an issue and will not do a voluntary recall. There is a class action lawsuit due to owners facing financial and safety risks. The truck is a 2018 Ram 2500 with only 16,000 miles. Stored in a climate protected building. There are many forums discussing this issue. 2018 Dodge/Ram products are well known for this safety defect.

Experiencing persistent ABS and Anti skid lights flashing on dash board along with persistent dinging, which has become very annoying. Took the vehicle to my nearest Ram dealership and they ran a diagnostic on it and told me that it was a faulty ABS/HCU causing the problem, but that there were no parts available to repair it. They said they would call and schedule an appointment to have it repaired as soon as the parts become available. I don’t know if I can wait much longer, as the constant dinging is very upsetting to my wife, who normally drives the truck.

The ABS and and electric circuit lights came on, on the dash. Then a week later my Transmission started acting up. I had it into the shop and they are saying the 2 are related. They have given me the paperwork showing how the code that comes up is from the recall and the paperwork showing it can trigger the transmission control module. The manufacturer made the recall back in December of 2024. They have yet to come up with a fix. Now we have a none drivable truck that has to sit until they find a fix. I am still making payments on this vehicle and they have nothing to say. We are almost coming up on a year, where is the liability?

First, I was not involved in an incident or accident with my vehicle. My concern is for my safety in the future while driving this vehicle. My RAM 2500 Power Wagon has a safety recall C4B/NHTSA 24V-896 for the brake system but there are no parts available to fix it. I currently have an ABS caution light with a "Service Electronic Braking System" and "Service Automatic Braking System" that constantly flashes and dings at random. I took my vehicle in to my local dealership and they told me there are no parts available and they were unable to fix the ongoing problem. I asked if my vehicle was safe to drive and they told me they cannot legally tell me if it is safe or not. There is no way forward to fix my vehicle and I haven't received any information other than "we are waiting on parts". With this...

While operating my 2018 Ram 2500, the Hydraulic Control Unit (HCU) failed suddenly and completely, causing the loss of: Anti-lock Braking System (ABS) Electronic Stability Control (ESC) Traction Control This failure occurred without warning, creating an immediate risk of accident. The dashboard illuminated warning lights indicating system failure. The most recent diagnostic, performed by Einspahr Auto in Brookings, SD confirmed that the HCU requires replacement. Previous incidents with the vehicle involved intermittent failures of the same systems, indicating a persistent and unresolved safety defect. The dealer has not indicated when a permanent fix will be available. Due to the ongoing safety risk and extended timeline for repair, I am requesting a manufacturer buyback at this time. Stellantis has not provided any acceptable fix which does not impose financial hardship while the vehicle remains unsafe. Impact / Safety Concern: -The vehicle cannot be safely driven. -Significant risk of injury or property...

My HCU has failed and now I don't have anti-lock braking, electronic stability control, traction control, or cruise control. I have contacted Mopar and two Ram dealers in my area but they just tell me there is no remedy. This has been going on since December of 2024.

KEEPS FLASHING ABS. IT SOUNDS A BING NOISE THE WHOLE TIME I DRIVE IT. SINCE I DRIVE OVER 2 HOURS A DAY IT IS REALLY FRUSTRATING AND 5 HOURS ON THE WEEKEND. ALSO, THE RADIO CUTS OUT ALL THE TIME WHEN THE ABS IN FLASHING THE AIR CONDITIONING OR HEAT GOES FULL BLAST WHEN THE ABS IN FLASHING AND BINGING. HOW CAN YOU NOT HAVE A FIX FOR THIS YET! I PAID A LOT OF MONEY FOR THIS TRUCK AND IT IS THE BIGGEST [XXX] RIGHT NOW!!! I REALLY WANT AN ANSWER ASAP!!! BEFORE I HIRE AN ATTORNEY TO SUE CHRYSLER/DODGE. [XXX] CUSTOMER [XXX]INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

In early December my 2018 ram 2500 was giving error messages to service anti-lock braked and service Electronic brake system. On December 19, 2018 I took the Ram to the dealer and the cause was the HCU-ICU stating internal electrical failure. They installed a new (Control unit HCU - brake- anti-lock module. It was fine until October 2024 when the same errors (service Anti- lock brakes / Service electronic brake system.) I received a RE-Call notice about the same module (HCU) having issues in November of 2024. I have called the dealership and they have not received a remedy (parts) to fix the issue. The error messages keep coming on Saying service anti-lock brakes- service electronic brake system. Its July 31, 2025 and Still no remedy from the dealership. I signed up on the RAM / Chrysler / Mopar website to be notified when a remedy is parts are ready...

The trailer connector behind the bumper developed corrosion on the connector pins. This vehicle has always been in Arizona. No rain snow to make this occur. While pulling my 30 ft trailer home from the mountains the trailer brakes suddenly disconnected due to the pin corrosion. Had this connector been sealed like the ones in the engine compartment, the pins would not corrode. Driving steep mountain grades pulling a 30 ft trailer now became a major safety issue. Fortunately there was no incident arising from this. The solution is simple.... seal the connector. I have read about other individuals that have the same failure.

I have repeatedly asked the manufacturer and the dealership for a resolution to the antilock brake system failure on this vehicle. This issue has been on going for months and I have no resolution. This is Ram case management # 93024671. My last correspondence is as follows: Dear Stellantis Case Management Team, I am writing to express my profound dissatisfaction and serious safety concerns regarding my vehicle, 2018 RAM 2500. This letter follows a delayed response to my initial inquiry about the safety of my vehicle and family, which I find unacceptable. Firstly, I request an immediate and definitive anticipated release date for the crucial part that is pending. The continued uncertainty around this essential component is directly impacting my peace of mind and the perceived safety of my vehicle, my family and the general public. Secondly, I demand a thorough explanation regarding the active fault code on a manufacturer...

Brakes went out abs/traction control/tpms lights on. Brake pedal goes to floor 50% of the time. Have to downshift and use engine brake to stop.

The backup camera is intermittent and faulty at times.

The contact owns a 2018 Ram 2500. The contact stated that the vehicle failed to start as intended. The vehicle was taken to the dealer; however, the vehicle was not diagnosed. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The contact received notification of NHTSA Campaign Number: 24V896000 (Service Brakes, Hydraulic); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure. The failure mileage was 100,000. VIN tool confirms parts not available.

HCU has failed on my truck back in July of 2024 it was impossible to find a replacement part got a recall letter on November had abs track control, and cruise control loss repeated dinging sounds to service ABS and electronic brakes and most recently you can hear the brake pads slightly rubbing on rotors and can feel a little bit of resistance while driving down the road

Hello, I received my recall notice cb4 hcu component and in my notice it said my truck has already been fixed. My truck has not been fixed and I called fca 10 or 12 times about the issue and I have received 10 or 12 different answers and they still haven't fixed my notice on the recall. What else can I do to get the issue fixed. Thank you [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The GPS on the Uconnect radio has failed and the map, compass, and clock do not work. This is a know problem on this radio. The radio loses the ICCID number and the STAR TSB says to replace the radio. The issue is when I travel somewhere and need a map, now I have to look at my phone while driving. This is just as bad as texting. The Ram customer care says the TSB for this issue covers other vehicles but not the RAM truck. The cost to replace the radio is very expensive and I cannot afford to replace it. RAM truck will not help me out. What can be done about this issue. Lots of RAM truck owners are experiencing this issue. The issue started when my truck has about 3900 miles on it. The dealer in the Wasilla AK location was not able to troubleshoot this...

ELECTRICAL BRAKE FAILURE WARNING

I have received an "Important Safety Recall" issued for my vehicle. In the notice, it states that "The loss of ABS/ESC/Traction control may cause a vehicle crash without prior warning." I have contacted the dealership as well as RAM offices with no answer other than that the part is not available. As a safety issue, this is unacceptable. Please know that legal representation will be sought out.

WHILE OPERATING VEHICLE THE ABS AND TRACTION CONTROL LIGHTS WOULD FLASH ON AND OFF AND MESSAGE SERVICE ANTI LOCK BRAKE SYSTEM. THEN SERVICE ELECTRIC BRAKE SYSTEM WOULD FLASH AND BEEP IN MESSAGE CENTER. AFTER FLASHING ON AND OFF MULTIPLE TIMES THE MESSAGES SELF CLEARED AND LIGHTS WENT OUT. DURING THIS IT IS HARD TO CONTROL THE TRUCK. CRUISE CONTROL NOT WORKIING EITHER.

Hydraulic brake unit failure. yes part is still available for inspection as it is still n the vehicle. I was driving to work at 21:30 hours on 1/1/2025 on a snow covered road. I gently applied the brakes and my truck went into a spin. I was going 25 mph. the abs unit failed and there was no pulsating in the brake pedal and rear brakes locked up sending the truck into an uncontrollable spin. my front left driver side of the vehicle then struck the jersey barrier and vehicle did continue to spin and then struck passenger rear side of the vehicle on the jersey barrier. currently has $17k in damages to the vehicle. I was not injured at the time but currently experiencing lower back pain. there was no lights or warnings on dash until immediately after the collision. I had the ABS HBU replaced a few months...

The uconnect screen has de-laminated causing random messages and a beep. Must try to exit message while driving. This is distracting and unsafe while driving. The problem may go away after restarting vehicle. It is now happening every time I use the truck. Dealer has informed me that this a known problem, but no recall. Estimated cost to me to fix could be $1,000 to $2,000. Why is this not a safety recall?

HCU unit intermittently come On and off. Has the potential for loss of traction control and braking.

ABS and Traction Control lights come on intermitenetly and loss of cruise control. Says service ABS Control System. This is a very common issue and something that could easily cause a major accident in not ideal situations if not resolved quickly. The dealership has inspected it and confirmed the ABS Module is the culprit. This is obviously something that is common and should be investigated more.

Had to replace HCU/ABS module July 2021 due to failure and abs/traction control lights illuminated fault code C0020. Now November 2024 i am having the same problem with the HCU/ABS module abs/traction control lights intermittently illuminated with fault code C0020. In process of locating new module and scheduling for repair.

Abs service abs lights come on with traction lights keep flashing and ringing.

C0020-01-ABS PUMP MOTOR CONTROL - GENERAL ELECTRICAL FAILURE continues to come up in my vehicle each time a bump in the road is hit. I am very concerned that this will cause intermittent or permanent loss of braking performance while driving and potentially endangering myself and other motorists. There are numerous complaints about this same issue on the internet with these model year trucks and FCA should be doing something about this inherent risk.

abs and traction control lights and alarms come on and off at very random times

My truck has 85000 miles on it. I have now experienced the ABS and traction control warning lights. They come on and off intermittently. The cruise control does not work when these lights are on. With all the complaints, its time Ram issues a fix under a recall.

Abs and traction control light goes on and off constantly. When the lights come on, traction control doesn't work, brakes don't worry as they should, and 4x4 doesn't work. Almost caused me to have a wreck in the rain with no traction control.

Hello, I have an Anti Lock Brakes electrical motor failure on my vehicle. The motor failed once at 20000 miles and failed again after a warranty replacement at 60000 miles. The part is on national back order for 2 years now and keeps the ABS from being fully engaged. It also disables cruise control and constantly dings. Two Dodge dealerships have confirmed the issue. The code is C0020-01

My brakes locked up due to the abs pump not working.

often experience noticeable braking issues. illumination of the ABS or brake warning light on the dashboard, indicating a problem with the anti-lock braking system. difficulty maintaining proper braking pressure, especially in emergency braking situations or on slippery surfaces, where the ABS should engage. As a result, the vehicle's stopping distance increases, and I have noticed a lack of control during hard braking. In some cases, the brakes feel soft or spongy due to improper hydraulic pressure regulation. Additionally, intermittent or complete loss of ABS functionality has occurred, leading to less stable braking performance.

ABS won't stay engaged causing traction control to not stay engaged and causes cruise control to not stay engaged. Skidding and loss of control are possible without ABS and traction control systems working. Loss of cruise control can cause rear impact from sudden slow down. Same problems are occurring in similar vehicles. Console chimes and ABS and traction control indicator lights come on. Message to service ABS system appears on console.

The ABS Light along with the EBS light were popping up on the dash every 2-3 seconds. My cruise control quit working. The truck is steadily dinging. I am sure the ABS will not function when this light is on. I am worried the truck will not handle well on wet roads. I have a [XXX] and a [XXX] . Please help me resolve this issue. The code I am getting is C0020 INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The Anti-Lock Braking System (ABS) Traction Control warning light and warning bell comes on after hitting bump in road or just randomly. Anti-lock brakes no longer work and it is a safety hazard. this issue back at about 78,000 miles. This is an ongoing safety problem with Ram 2500's and there is no recall by the manufacturer for a known defective part.