2026 Mack Anthem AN (4), 2025–2026 Mack Pioneer PR (4) Recall: Automatic high beams (AHB) may not switch to low beam headlights as…
NHTSA campaign 25V803000 · Exterior Lighting · filed Nov 20, 2025 · verified Jul 30, 2026
The defect
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."
The risk
High beam headlights that do not switch to low beam as intended can reduce visibility for oncoming traffic, 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
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.
Affected vehicles
| Make | Model | Model years |
|---|---|---|
| Mack | Anthem AN (4) | 2026 |
| Mack | Pioneer PR (4) | 2025, 2026 |
Related recalls
More Mack Anthem AN (4) recalls
Other campaigns involving Mack vehicles
Source: NHTSA recall database, campaign 25V803000 (manufacturer number SC0488). Data last verified Jul 30, 2026.