- Vehicles
- 317,630
- Built between
- Not published
- Models
- 4
- Recall type
- Vehicle
- Initiated by
- NHTSA investigation
- Owners notified
- 9 January 2025
- Repaired
- 14%
- Unrepaired
- 252,644
Does this affect my vehicle?
The manufacturer did not publish a build-date range for this recall, so the model and year list below is the only way to tell whether your vehicle is covered.
- 2017-2018 Ram 2500
- 2017-2018 Ram 3500
- 2017-2018 Ram 4500
- 2017-2018 Ram 5500
Repair progress
252,644 of 317,630 vehicles in this recall had still not been repaired as of Q2 2026.
14% repaired — 42,973 of 317,630 reported
- Owners not reachable
- 9,694
- Scrapped or exported
- 12,319
Manufacturers file these figures with NHTSA each quarter. Vehicles the manufacturer could not trace, or that have been scrapped or exported, are counted separately and are not included in the unrepaired figure.
What the defect is
Chrysler (FCA US, LLC) is recalling certain 2017-2018 Ram 2500 Pickup, Ram 3500 Pickup, 3500 Cab Chassis, 4500 and 5500 Cab Chassis vehicles. The hydraulic control unit (HCU) may fail, which can cause the anti-lock brake (ABS), electronic stability control (ESC), and traction control systems to fail.
What could happen
A loss of anti-lock brakes, electronic stability control, or traction control can increase the risk of a crash.
What gets fixed
Dealers will replace the brake HCU, or replace the HCU motor, free of charge. Interim notification letters, notifying owners of the safety risk, were mailed January 9, 2025. Some owner notification letters were mailed January 9, 2025. The remaining owner notification letters will be mailed at a future date, anticipated October 2026.
Parts involved
- Hcu68143491AA / 68195569AABrake HCU
Part numbers are as filed by the manufacturer and are listed for reference. Your dealer will confirm the correct part for your vehicle.
Timeline
- Recall reported to NHTSA27 November 2024
- Owners notified9 January 2025
- Latest repair reportQ2 2026 — 14% repaired
Your rights
A safety recall repair is free. Under US federal law the manufacturer must fix a safety defect at no cost to you — no charge for parts, labor or diagnosis — whether or not you are the original owner. A dealer cannot charge you for recall work, and cannot require you to have bought the vehicle from them.
That entitlement is not unlimited. It applies where the vehicle was first sold less than 15 years before the recall was announced — 5 years for tires. Past that a manufacturer may still do the repair free of charge, and many do, but they are no longer obliged to. This recall was reported on 27 November 2024.
To arrange the repair, contact any franchised dealer for the brand. If a dealer refuses the work or tries to charge for it, you can report that to NHTSA at nhtsa.gov/recalls or on 1-888-327-4236.
Manufacturer contact
Owners may contact FCA customer service at 1-800-853-1403. FCA's number for this recall is C4B.
Official source
- Manufacturer's recall number
- C4B
- Recalling manufacturer
- Chrysler (FCA US, LLC)
- Recall initiated by
- ODI
Everything on this page — the models listed, the build dates and the repair figures — comes from the manufacturer's filing to NHTSA and describes the vehicle line as a whole, not any individual car. Only the manufacturer can confirm whether a specific vehicle is affected, and whether its recall work has already been carried out. Check yours by VIN and read the official notice at nhtsa.gov/recalls.
Additional notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153) or go to nhtsa.gov.
Check your own vehicle
This page describes the recall, not any one car. To see which recalls cover a specific vehicle, search by make, model and year.
A VIN lookup here identifies your vehicle and shows recalls issued for that make, model and year. It cannot tell you what is still open on your individual car - only the manufacturer knows that. Search by VIN instead, or check your VIN at nhtsa.gov for whether a recall is still open on your individual car.