2027 Mack Anthem AN (4), 2025–2027 Mack Pioneer PR (4) Recall: Trailer turn signals may not function properly
NHTSA campaign 26V207000 · Exterior Lighting · filed Apr 1, 2026 · verified Jul 30, 2026
The defect
Mack Trucks, Inc. (Mack) is recalling certain 2025-2027 Pioneer (4) and 2027 Anthem (4) trailers. The trailer turn signals may not function properly. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."
The risk
Turn signals that do not function properly may fail to indicate the driver's intention to change vehicle direction, increasing the risk of a crash.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
Dealers will update the turn signal indicator software, free of charge. Owner notification letters were mailed May 7, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0493. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov April 1, 2026.
Affected vehicles
| Make | Model | Model years |
|---|---|---|
| Mack | Anthem AN (4) | 2027 |
| Mack | Pioneer PR (4) | 2025, 2026, 2027 |
Related recalls
More Mack Anthem AN (4) recalls
Other campaigns involving Mack vehicles
Source: NHTSA recall database, campaign 26V207000 (manufacturer number SC0493). Data last verified Jul 30, 2026.