CarRecallWatch- Component
- EXTERIOR LIGHTING:LIGHTING CONTROL MODULE:SOFTWARE
- Problem
- 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."
- 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.
- Remedy
- 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.
What this recall means for you
Certain 2025 and 2026 Mack trucks have a lighting control software problem. The automatic high beam feature may not switch the headlights from high beam to low beam as intended, which can fail to meet federal lighting standards.
High beams that stay on when they should dim can reduce visibility for oncoming drivers, which increases the risk of a crash. Mack will send a software update over the air to disable the automatic high beam feature as an interim fix, at no cost to owners. Owner letters were mailed May 29, 2026.
If you own an affected truck, check your VIN for open recalls and contact Mack customer service at 1-800-866-1177, referencing recall number SC0488. The repair is free at an authorized dealer.
Check whether this recall is open on your vehicle
Official recall notice
Affected vehicles
| Mack Anthem AN (4) | 2026 |
|---|---|
| Mack Pioneer PR (4) | 20252026 |