United StatesCertain Mack Trucks Anthem (4) 2026 and Pioneer 2025–2026 vehicles are affected; check your vehicle make, model and year or VIN. The automatic high beams may not switch to low beams as intended, which fails to meet FMVSS 108 and can reduce visibility for oncoming traffic. Mack will provide a free over‑the‑air software update to disable the AHB; owners were mailed letters May 29, 2026 and can contact Mack at 1‑800‑866‑1177 (recall SC0488); VINs searchable on NHTSA.gov beginning November 27, 2025.
What's being recalled
Mack Trucks, Inc. (Mack) is recalling certain 2026 Anthem (4) and 2025-2026 Pioneer vehicles. The automatic high beams (AHB) may not switch to low beam headlights as intended. 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 25V803000; Manufacturer campaign SC0488
The hazard
High beam headlights that do not switch to low beam as intended can reduce visibility for oncoming traffic, increasing the risk of a crash.
What to do
As an interim action, Mack will update the vehicle software through an over-the-air (OTA) update to disable the AHB feature, free of charge. Owner letters were mailed May 29, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0488. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning November 27, 2025.
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)
