NHTSAEXTERIOR LIGHTING
Mack Trucks, Inc. - High Beams May Not Automatically Switch to Low Beams/FMVSS 1...
Published: November 20, 2025Recall ID: 25V803000Category: vehiclesCountry: US
Reason for Recall / Hazard
High beam headlights that do not switch to low beam as intended can reduce visibility for oncoming traffic, increasing the risk of a crash.
Product Description & Identification
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."
Affected Products
High Beams May Not Automatically Switch to Low Beams/FMVSS 108
Additional Source Details
| Field | Value |
|---|---|
| Subject | High Beams May Not Automatically Switch to Low Beams/FMVSS 108 |
| Nhtsa id | 25V803000 |
| Component | EXTERIOR LIGHTING |
| Recall link › Url | https://www.nhtsa.gov/recalls?nhtsaId=25V803000 |
| Recall link › Description | Go to Recall |
| Recall type | Vehicle |
| Do not drive | No |
| Manufacturer | Mack Trucks, Inc. |
| 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." |
| Completion rate | 46.56 |
| 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. 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. |
| Consequence summary | High beam headlights that do not switch to low beam as intended can reduce visibility for oncoming traffic, increasing the risk of a crash. |
| Mfr campaign number | SC0488 |
| Potentially affected | 247 |
| Report received date | 2025-11-20T00:00:00.000 |
| Fire risk when parked | No |