NHTSA Recall 26V620000: Software/programming (service brakes)
Mack Trucks, Inc. reported this safety recall to NHTSA on , covering an estimated 850 vehicles. It affects 2 models including the Mack Anthem AN (4).
| NHTSA campaign | 26V620000 |
|---|---|
| Manufacturer campaign | SC0500 |
| Component | SERVICE BRAKES, ELECTRIC › SOFTWARE/PROGRAMMING |
| Report received | September 28, 2026 |
| Initiated by | Manufacturer |
Defect
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.
Safety risk
Reduced braking performance can require a greater distance to stop, increasing the risk of a crash.
Remedy
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 by recall 26V620000
Being listed here means the campaign covers the model year, not that every car was built with the defect or is still unrepaired. Enter your VIN above to check your specific vehicle. Recall repairs are free at authorised dealers. Source: NHTSA, October 2026.