United StatesMack Trucks is recalling certain 2025–2027 Pioneer (4) and 2027 Anthem (4) trailers; affected vehicles can be identified by model/year and by VINs searchable on NHTSA.gov (searchable since April 1, 2026). The trailers’ turn signals may not function and fail to comply with FMVSS 108, and dealers will update the turn signal indicator software free of charge; owner letters were mailed May 7, 2026. For more information call Mack customer service at 1-800-866-1177 (recall SC0493).
What's being recalled
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."
How to identify it
NHTSA campaign 26V207000; Manufacturer campaign SC0493
The hazard
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.
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.
The official notice
This page is a summary of the notice published by U.S. National Highway Traffic Safety Administration, collected from U.S. National Highway Traffic Safety Administration. Check the original before you act on it.
Read the official notice (opens in a new tab)