CarRecallWatch- Component
- EXTERIOR LIGHTING:LIGHTING CONTROL MODULE
- Problem
- Mack Trucks, Inc. (Mack) is recalling certain 2025-2026 Pioneer vehicles. When towing a trailer, the trailer lights may fail to illuminate due to an improperly manufactured body control module.
- Risk
- Trailer tail lights and turn signals that do not illuminate as intended can reduce visibility to other drivers, increasing the risk of a crash.
- Remedy
- Dealers will replace the trailer body input/output module, free of charge. Owner letters were mailed November 19, 2025. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0484.Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning September 25, 2025.
What this recall means for you
The lighting control module in certain vehicles may have been improperly manufactured. When towing a trailer, the trailer tail lights and turn signals may fail to illuminate as intended, reducing how visible your rig is to other drivers.
Dim or missing trailer lights make it harder for drivers behind you to see when you are braking or turning, which increases the risk of a crash. If you tow a trailer, check that your trailer lights work before you drive, and pay attention to any warning signs on your dashboard.
The repair is free. Dealers will replace the trailer body input/output module at no cost to you. Owner letters were mailed November 19, 2025, and you can contact Mack customer service at 1-800-866-1177 (recall number SC0484) for help. You can also check whether your vehicle identification number (VIN) is included in this recall by searching NHTSA.gov, where affected VINs will be searchable beginning September 25, 2025.
Check whether this recall is open on your vehicle
Official recall notice
Affected vehicles
| Mack Pioneer PR (4) | 20252026 |
|---|