Mack Trucks, Inc. recall 25V803

Affected vehicles (2)

Component / system

Defect

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 / 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.

Chronology of events

1. Oct 7, 2025

   October 7, 2025: Adaptive driving beam testing performed on a truck built with the automatic high beam feature.

2. Oct 14, 2025

   October 14, 2025: Engineering notified that the automatic high beam feature was unable to identify certain vehicles during some test scenarios.

3. Oct 23, 2025

   October 23, 2025: Safety Office opens a potential non-compliance investigation.

4. Nov 3, 2025

   November 3, 2025: Product Safety Evaluation Committee reviews investigation information and recommends escalation to the Product Safety Committee.

5. Nov 13, 2025

   November 13, 2025: Product Safety Committee determines that a product non-compliance exists and decides to initiate a recall. There have been no warranty claims, field reports, accidents or injuries reported related to this issue.

Notification schedule

Dealer notification

Nov 27, 2025 - Nov 27, 2025 No Dealers

Owner notification

Jan 17, 2026 - Jan 17, 2026 Phased Recall