2025-2026 Mack Pioneer PR (4), 2026 Mack Anthem AN (4) recall: High Beams May Not Automatically Switch to Low Beams/FMVSS 108
Report received by NHTSA: Nov. 20, 2025.
Built by the Tribune's code from NHTSA's official records. No AI wrote this page. Updated Nov. 7, 2026.
- What's recalled
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."
- The risk
High beam headlights that do not switch to low beam as intended can reduce visibility for oncoming traffic, increasing the risk of a crash.
- Who's affected
247 vehicles potentially affected, according to NHTSA. Models: 2025-2026 Mack Pioneer PR (4), 2026 Mack Anthem AN (4).
- Compared with
Mack Trucks, Inc. has 10 NHTSA recalls in 2026 so far, compared with 17 in all of 2025.
Counted by the Tribune from NHTSA's records since Nov. 1, 2016.
- Before this
3 earlier NHTSA recalls for these models since Nov. 1, 2016:
- Nov. 20, 2025 2025-2026 Mack Pioneer PR (4) recall: Load Lock Clamps May Fail
- Sept. 18, 2025 2025-2026 Mack Pioneer PR (4) recall: Inoperative Trailer Lighting (agency record)
- Aug. 11, 2025 2025-2026 Mack Pioneer PR (4), 2025 Mack Anthem (an) recall: Loss of Steering Control (agency record)
Counted by the Tribune from NHTSA's records since Nov. 1, 2016.
- What to do and when
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.
NHTSA's record, word for word
- Check it yourself
NHTSA's VIN lookup shows whether a specific vehicle has an open recall.
Models in this recall
- Mack Anthem AN (4) 2026
- Mack Pioneer PR (4) 2025-2026
The record as NHTSA published it
| NHTSA recall number | 25V803000 |
|---|---|
| Manufacturer | Mack Trucks, Inc. |
| Recall type | Vehicle |
| Component | EXTERIOR LIGHTING |
| Report received by NHTSA | Nov. 20, 2025 |
| Potentially affected | 247 vehicles |
| Manufacturer's recall number | SC0488 |
| “Do not drive” warning | No |
| Fire risk when parked (“park outside”) | No |
Source: National Highway Traffic Safety Administration recall records (public domain). NHTSA's record