Mack recall: Service brakes, electric
What is wrong
Mack Trucks, Inc. (Mack) is recalling certain 2026-2027 Anthem AN (4) and Pioneer PR (4) vehicles equipped with a tanker application package. Inaccurate axle load calculations may cause reduced braking performance while transporting smoothbore tanker trailers.
What could happen
Reduced braking performance can require a greater distance to stop, increasing the risk of a crash.
The fix
Dealers will install new software to disable the dynamic trailer braking calculations, free of charge. Owner notification letters are expected to be mailed November 27, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0500. Vehicle Identification Numbers (VINs) involved in this recall will become searchable on NHTSA.gov on October 5, 2026.
Vehicles covered
- Mack Anthem An (4) 2026–2027
- Mack Pioneer Pr (4) 2026–2027
Facts
- NHTSA recall number
- 26V620000
- Type
- Vehicle
- Filed by
- Mack Trucks, Inc.
- Reported to NHTSA
- Sep 28, 2026
- Owners notified
- Not yet
- Vehicles or items affected
- 850
- Started by
- The manufacturer
- Built
- Feb 24, 2025 to Sep 11, 2026
- Part
- Service brakes, electric › Software/programming
- Maker's own recall number
- SC0500
Other recalls for the same vehicles
- Mack recall: Structure Oct 1, 2026
- Mack recall: Exterior lighting Aug 6, 2026
- Mack recall: Wheels May 28, 2026
- Mack recall: Service brakes, air Apr 23, 2026
- Mack recall: Exterior lighting Apr 1, 2026
- Mack recall: Exterior lighting Nov 20, 2025
To check one car, enter its 17-character VIN on the official NHTSA page: a recall may cover only some vehicles of a model year.
Recall data: National Highway Traffic Safety Administration (NHTSA). Nebula is not affiliated with or endorsed by NHTSA.