CarRecallWatch- Component
- EXTERIOR LIGHTING:TURN SIGNAL
- Problem
- 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."
- 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.
- Remedy
- 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.
What this recall means for you
Some Mack trailers may have turn signals that do not work properly. If a signal fails to show the driver's intent to change direction, other drivers may not expect the move, which increases the risk of a crash. The affected vehicles also do not meet Federal Motor Vehicle Safety Standard 108 for lamps and reflective devices.
Dealers will update the turn signal indicator software at no cost to the owner. Owner notification letters were mailed May 7, 2026. If you have questions, you can contact Mack customer service at 1-800-866-1177 and refer to recall number SC0493.
Check your vehicle identification number (VIN) on NHTSA.gov for open recalls, since VINs for this recall became searchable there on April 1, 2026. If your vehicle is listed, contact an authorized Mack dealer to schedule the free repair.
Check whether this recall is open on your vehicle
Official recall notice
Affected vehicles
| Mack Anthem AN (4) | 2027 |
|---|---|
| Mack Pioneer PR (4) | 202520262027 |