Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2015 Ram 3500 owners, lightly cleaned up (personal details are redacted by NHTSA).
After I brought my truck in for recall Y26 they inspected the studs and said they were fine (not stretched which is what the recall is for). I took a trip and put 6,700 after the inspection and the dealer re-torqued the wheels. When I got back there seemed to be something wrong with the brakes and so I brought it back to the same dealer that inspected it before and verified the studs were not stretched, now found that the pads and rotors were damaged and the studs were studs now stretched. No problem before the recall but after the recall and new torque for the wheels the studs are stretched. Dodge said they will pay for the studs to be replaced but not the brakes. The brakes were fine before. …
The output voltage to the Trailer Braking system is low, only 7.5 volts. Other owners have the same problem. From what I understand there is an issue with the computer that keeps the Original Equipment trailer brake controller from delivering full power at speeds below 30 MPH. This is a safety hazard in stop and go driving. There are many complaints about this same problem in the Ram Forumz. Ram should be able to do a software update to fix the problem. One of the posts in the forum stated that Ram has the software update available but will charge a lot of money for it. This is a safety issue and these trucks should be recalled to fix the problem.
ABS Module failed and is not reading rear wheel speed. Shop isolated issue to ABS module, and hydraulic control unit. Four safety components are no longer working as a result: ABS braking, traction control, 4wd, and rear back up sensors. This appears to be a common issue with Rams HD trucks as the parts are on back order causing me to drive my vehicle with no safety features.
humming from the hydroboost pump, actual issue is the high pressure steering line has a nylon tube inside the hose that breaks apart and moves throughout the system. Dodge had one revision of the hose on the early model years but this issue has gone unresolved. I am afraid if i cant get it fixed it may possibly cause the brakes or steering assistance to fail.
At about 3,000 miles I noticed a periodical head light flicker and intermittent radio issues. Shortly after that the truck has presented with periodical brake issues. My front brakes parodically drag and get hot. Typically on one front side or the other. However on [redacted] my wife and I took the truck out for a drive and both front brakes began dragging and heated up. I had to be towed 40+ miles back home. Two of my neighbors can verify I've had issues with the brakes on multiple occasions for several years now. I've had to limp the truck home on several occasions while in town and in Feb. 2025 it put my wife and I in what a consider a dangerous situation by stranding us on the side of the highway. I don't remember any warning lamps coming on but I did a scan after I got the truck back home. B170-15, B210A-16, B222C, B2861-15, P2509 & P2560 were present. …
This is a particularly dangerous situation because there is no method to know, in advance, the factory integrated trailer brake module (itbm) will fail to provide full voltage to the electric trailer brakes I attached my 13,000 pound fifth wheel trailer to my truck and following the itbm setup steps in the owners' manual, the results were as expected. There were no warnings or indicators signaling an issue with the itbm's ability to apply the trailer's electric brakes. On typical city/urban driving the braking effort from the trailer was as expected. Once I entered a more rural setting and roadway speeds increased to 50 MPH I discovered, as I approach a fast changing traffic light, hard braking the truck did not send enough braking signal to the trailer and as a result I was pushed well into the intersection. …
Circa npoon 5/6/16 intersection of pomona st and orangethorpe , fullerton, ca my 2015 Ram 350 w/3009 miles failed to stop while 25 ft behind a late model camray, at less than 1 MPH the ABS failed tota;lly. My Ram plowed into the camray which was stopped while attempting a left turn on to ortangethorpe. The 87 year old driver in the camray was bumped 15 ft and sufford a dented left bumper, fender and tail light. My wife was in the passenger seat of the Ram as a witness and a fullerton police officer witnessed the accident, he failed to make a report to the best of my knowledge.. I had no option but to hit the camray, as if, I swerved to the left I would have hit oncoming traffic and if I swerved right I might have killed pedestrians in the cross walk! .I had no choice, but use the camray to stop since the Ram ABS system failed totally. …
When towing my 13000 pound trailer, I noticed that the electronic trailer brake controller in my truck will provide sufficient braking power to stop at slower speeds. However, when a harder/faster stop, such as when I was traveling at 45-50 MPH is required there is not sufficient braking to the trailer. I was not able to stop as quickly as I should have. I tested the voltage on the controller with the settings to maximum (gain at 10 and manual slider to 100%) and was only getting 7.5 volts. The reading should be closer to 12 volts. The brakes on my trailer were inspected and are working correctly. The dealer said the controller was working as designed. This is a safety issue that the dealer is overlooking and can lead to accidents/fatalities. This seems to be an issue with the 2015 vehicles and the factory brake controller.
I have the integral trailer brake controller on my truck and I hooked up to my camper for the first time with the new truck, [the trailer brakes worked fine with the truck that I replaced] I had very limited braking power on trailer brakes, I did some tests on the trailer brakes first and found that they are working properly, then I did a test on the brake controller and found out the trailer brake controller is only putting out around 9 volts when set to maximum gain and fully applied, it should be 12 volts or higher, I took it to the dealer and they replaced the trailer brake control module, the brakes are no better and im afraid to tow now and can't even use this truck for what I bought it for, the dealer says that's how the controllers work now which is unsafe and unacceptable.
Tl* the contact owns a 2015 Ram 3500. The contact took the vehicle to roseville Chrysler Jeep Dodge Ram (2805 long lake rd, roseville, mn, 55113) for transmission work. The contact inquired with the dealer to have the brake boosters adjusted because the dealer stated that they failed without warning. The contact mentioned that this was the fourth time the brake boosters failed. While driving, the brakes seized and the vehicle would not stop. Per the manufacturer's orders, the dealer replaced the brake boosters as a courtesy. The manufacturer agreed to have the failure repaired, but stated that this was the last courtesy or reimbursement. Any additional failures regarding the brake boosters would be at the contact's expense. The failure mileage was approximately 50,000.
Brake complaints in other 3500 years
Frequently asked questions
How common are brake problems on the 2015 Ram 3500?
NHTSA has 24 complaints about the brakes of the 2015 Ram 3500, 18% of the model year's 137 complaints.
Is there a recall for 2015 Ram 3500 brake problems?
No. NHTSA lists no brakes recall for the 2015 Ram 3500, 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 2015 Ram 3500 brake problems start?
Half of the complaints with a recorded mileage happened before about 17,000 miles, and 67% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 0 fires and 0 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.