Vehicle recall 25V803000 · November 20, 2025
Mack Pioneer PR (4) and Anthem AN (4)
The automatic high beams (AHB) may not switch to low beam headlights as intended.
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- 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."
- Consequence
- 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.
Recall details
- NHTSA campaign
- 25V803000
- Reported to NHTSA
- November 20, 2025
- Filed by
- Mack Trucks, Inc.
- Manufacturer campaign
- SC0488
- Owner notification
- May 29, 2026
- Vehicles potentially affected
- 247
- Initiated by
- the manufacturer
- Components
- Exterior lighting › Lighting control module › Software
Vehicles covered
As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.
- Mack Anthem AN (4) (2026): 2026
- Mack Pioneer PR (4) (2025-2026): 2026, 2025
Has your Mack been repaired?
Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.
NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Mack dealer can also check your VIN. Recall repairs are free.