2025–2026 Mack Pioneer PR (4): Exterior Lighting recall
NHTSA campaign 25V622000 · 156 units potentially affected · filed Sep 18, 2025
What's wrong
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.
Why it matters
Trailer tail lights and turn signals that do not illuminate as intended can reduce visibility to other drivers, increasing the risk of a crash.
The fix
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.
Recall details
- NHTSA campaign
- 25V622000
- Manufacturer no.
- SC0484
- Manufacturer
- Mack Trucks, Inc.
- Component
- EXTERIOR LIGHTING:LIGHTING CONTROL MODULE
- Units affected
- 156
- Report received
- Sep 18, 2025
- Owner letters
- Nov 19, 2025
- Type
- Vehicle
Check whether your vehicle is included with the official NHTSA VIN lookup or your dealer. Repairs for safety recalls are free.
Vehicles covered
- Mack Pioneer PR (4) 2025, 2026