Key Takeaway
High Beams May Not Automatically Switch to Low Beams/FMVSS 108 by MACK TRUCKS, INC was recalled on November 20, 2025. 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. The final...
High Beams May Not Automatically Switch to Low Beams/FMVSS 108
Description
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."
Injuries / 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. 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.
Products Affected
Vehicle
VehiclesRelated Recalls
Rear Brakes May Overheat
December 15, 2025
Load Lock Clamps May Fail
November 20, 2025
ECU Malfunction May Impair Safety Systems
November 18, 2025
Headlights May Fail
November 3, 2025
Improperly Welded Seat Belt Anchor/FMVSS 210
October 6, 2025
Inoperative Trailer Lighting
September 19, 2025
Frequently Asked Questions
Is this recall still active?
Check the status badge at the top of this page. "Ongoing" means the recall is still active and you should follow the remedy instructions. "Completed" or "Terminated" means the recall process has concluded, though the safety issue remains relevant for any unrepaired products.
How do I check if my product is affected?
Compare the model number, lot code, serial number, or date range listed in the recall notice with the information on your product's label or packaging. For vehicles, check your VIN at NHTSA.gov/Recalls.
What remedy is available for this recall?
The listed remedy for this recall is: 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 notifi...
Where can I find the original recall notice?
This recall was issued by NHTSA. You can view the original notice using the link provided above.