High beams may not automatically switch to low beams/fmvss 108
Defect 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."
Safety 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.
Corrective 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. The final remedy is under development. Interim owner notification letters were mailed january 7, 2026. Additional letters will be sent once the final remedy is available, anticipated june 1, 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.
Similar Recalls
Other recalls from Mack Trucks, Inc. or involving Exterior Lighting.
FAQ: Recall 25V803000
Your rights, the repair process, and what each field on this page means.
What is recall 25V803000?
NHTSA recall 25V803000 was issued by Mack Trucks, Inc. on November 20, 2025. It addresses: High beams may not automatically switch to low beams/fmvss 108. The recall affects approximately 247 vehicles, with the defect involving the Exterior Lighting component.
How do I get this recall repaired?
Contact any authorized Mack Trucks, Inc. dealer and reference NHTSA recall ID 25V803000 or the manufacturer campaign number SC0488. Under federal law, the repair is completely free regardless of vehicle age or owner history.
Is my vehicle included in this recall?
The only way to confirm is to look up your 17-character VIN at nhtsa.gov/recalls. NHTSA's tool will tell you if VIN-by-VIN this exact recall applies.
How long do I have to get a recall repair done?
There is no expiration on most federal safety recalls. Even if your vehicle is years old and you bought it used, the manufacturer is required to perform the repair at no cost.
Where does the data on this page come from?
All information on this page is sourced directly from the U.S. Department of Transportation public dataset for NHTSA recalls. Last refreshed: 2026-05-20. For the most current official notice, visit nhtsa.gov/recalls.