2025-2027 Mack Pioneer PR (4), 2027 Mack Anthem AN (4) recall: Turn Signal Failure/FMVSS 108
Report received by NHTSA: April 1, 2026.
Built by the Tribune's code from NHTSA's official records. No AI wrote this page. Updated Nov. 4, 2026.
- What's recalled
Mack Trucks, Inc. (Mack) is recalling certain 2025-2027 Pioneer (4) and 2027 Anthem (4) trailers. The trailer turn signals may not function properly. 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
Turn signals that do not function properly may fail to indicate the driver's intention to change vehicle direction, increasing the risk of a crash.
- Who's affected
86 vehicles potentially affected, according to NHTSA. Models: 2025-2027 Mack Pioneer PR (4), 2027 Mack Anthem AN (4).
- Compared with
Mack Trucks, Inc. has 9 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
79 earlier NHTSA recalls by Mack Trucks, Inc. since Nov. 1, 2016; the 5 most recent:
- March 11, 2026 2022-2027 Mack Terrapro (te) recall: ECU Software Error May Cause Unexpected Vehicle Movement/FMVSS 102
- Dec. 15, 2025 2010-2016 Mack Granite (gu) recall: Rear Brakes May Overheat (agency record)
- Nov. 20, 2025 2025-2026 Mack Pioneer PR (4), 2026 Mack Anthem AN (4) recall: High Beams May Not Automatically Switch to Low Beams/FMVSS 108 (agency record)
- Nov. 20, 2025 2025-2026 Mack Pioneer PR (4) recall: Load Lock Clamps May Fail (agency record)
- Nov. 18, 2025 Mack Trucks, Inc. equipment recall: ECU Malfunction May Impair Safety Systems (agency record)
Counted by the Tribune from NHTSA's records since Nov. 1, 2016.
- What to do and when
Dealers will update the turn signal indicator software, free of charge. Owner notification letters were mailed May 7, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0493. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov April 1, 2026.
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) 2027
- Mack Pioneer PR (4) 2025-2027
The record as NHTSA published it
| NHTSA recall number | 26V207000 |
|---|---|
| Manufacturer | Mack Trucks, Inc. |
| Recall type | Vehicle |
| Component | EXTERIOR LIGHTING |
| Report received by NHTSA | April 1, 2026 |
| Potentially affected | 86 vehicles |
| Manufacturer's recall number | SC0493 |
| “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