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."
Compare the exact product and every lot, model, serial range or date listed in the official notice. A similar name alone does not establish that your product is included.
Identifiers in this source record
2026 MACK ANTHEM AN (4)Manufacturer campaign: SC0488Part: 239984062025 MACK PIONEER PR (4)2026 MACK PIONEER PR (4)Vehicle: VIN plus the year, make and model. Car seat or equipment: Manufacturer, model and production date from the label. Tire: Brand, tire line, size and DOT tire identification number.
Read the vehicles identification guideWhy this notice was issued
High beam headlights that do not switch to low beam as intended can reduce visibility for oncoming traffic, increasing the risk of a crash.
Official action
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.
Follow the specific instructions and use the contact details in the announcement if you need help confirming a match or arranging the remedy.
Read the full official instructionsProduct & source details
- Product
- 2026 MACK ANTHEM AN (4)
- Brand or manufacturer
- MACK
- Source
- NHTSA
- Notice type
- Recall
- Source reference
- 25V803000
- Category
- Vehicles & road safety