2018 RAM 3500 electrical system problems
136 owner complaints filed with NHTSA name the electrical system on the 2018 RAM 3500 — 17% of all complaints for this model year.
What owners report
“The recall for the brake hydraulic contol unit (C4B/NHTSA 24V-896) has not been addressed in years.....I have no brakes on my trailer from this failure. This needs fixed asap.”
filed Aug 6, 2026
“Odometer Fraud. The contact purchased a 2018 Ram 3500. It was discovered that there was a mileage discrepancy. The vehicle was a dealer sale. At the time of purchase, the vehicle mileage was 78,546 and at the time of a Carfax report check, it was discovered that the mileage was 699,573.”
filed Aug 3, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related recalls
- These vehicles are being recalled to address a defect that could prevent the cruise…Campaign 18V332000 · May 17, 2018
Related service bulletins
Sensor - turbocharger speed
113744 · Service Bulletin/Repair Instructions · issued Jul 29, 2026
Electrical System problems in other 3500 years
| Year | Reports | Share |
|---|---|---|
| 2026 3500 | 17 | 65% |
| 2025 3500 | 27 | 64% |
| 2024 3500 | 11 | 26% |
| 2022 3500 | 23 | 12% |
| 2021 3500 | 17 | 27% |
| 2020 3500 | 9 | 8% |
| 2019 3500 | 20 | 15% |
| 2017 3500 | 33 | 11% |
| 2016 3500 | 10 | 7% |
| 2015 3500 | 19 | 14% |
| 2014 3500 | 25 | 12% |
| 2013 3500 | 17 | 15% |
Other reported problem areas on the 2018 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.