Mack when towing a trailer, the trailer lights may fail to illuminate due to an improperly manufactured body control module.
The short version
Mack Trucks, Inc. reported a problem with the exterior lighting lighting control module. Here is what owners need to know.
When towing a trailer, the trailer lights may fail to illuminate due to an improperly manufactured body control module.
Trailer tail lights and turn signals that do not illuminate as intended can reduce visibility to other drivers, increasing the risk of a crash.
Take it to a dealer — they will replace the trailer body input/output module, free of charge.
Affected vehicles
These model years are included in NHTSA campaign 25V-622.
| YEAR RANGE | MODEL |
|---|---|
| 2025–2026 | Mack Pioneer |
What changed
Newest first. The record shows both when the recall began and what has changed since.
- Recall reported to NHTSA. LATEST
Drive one of these? Check your VIN to see if your specific vehicle is affected.
Check your VINWhat this record means
Data from the NHTSA recall database. A clean VIN check means no open federal recalls for that vehicle — not that it never had one.
Not affiliated
MyAutoRecalls is not affiliated with Mack Trucks, Inc. or the National Highway Traffic Safety Administration.