2015 RAM 3500 service brakes problems
24 owner complaints filed with NHTSA name the service brakes on the 2015 RAM 3500 — 18% of all complaints for this model year.
What owners report
“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…”
filed Mar 4, 2026
“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…”
filed Mar 4, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
Trac-Rite Operation Diagnosis, Chatter, Shudder, Moving From A Stop And Turning
S1203000003 REV.A · Service Bulletin/Repair Instructions · issued Jun 26, 2026
Service Brakes problems in other 3500 years
| Year | Reports | Share |
|---|---|---|
| 2026 3500 | 7 | 32% |
| 2025 3500 | 15 | 43% |
| 2024 3500 | 10 | 25% |
| 2022 3500 | 10 | 5% |
| 2021 3500 | 5 | 8% |
| 2020 3500 | 7 | 6% |
| 2019 3500 | 8 | 6% |
| 2018 3500 | 493 | 63% |
| 2017 3500 | 140 | 46% |
| 2016 3500 | 11 | 8% |
| 2014 3500 | 14 | 7% |
| 2013 3500 | 3 | 3% |
Other reported problem areas on the 2015 RAM 3500
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.