Software calculation error may cause reduced braking performance
Defect Summary
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 Consequence
Reduced braking performance can require a greater distance to stop, increasing the risk of a crash.
Corrective Action
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.
Similar Recalls
Other recalls from Mack Trucks, Inc. or involving Service Brakes, Electric.
FAQ: Recall 26V620000
Your rights, the repair process, and what each field on this page means.
What is recall 26V620000?
NHTSA recall 26V620000 was issued by Mack Trucks, Inc. on September 28, 2026. It addresses: Software calculation error may cause reduced braking performance. The recall affects approximately 850 vehicles, with the defect involving the Service Brakes, Electric component.
How do I get this recall repaired?
Contact any authorized Mack Trucks, Inc. dealer and reference NHTSA recall ID 26V620000 or the manufacturer campaign number SC0500. Under federal law, the repair is completely free regardless of vehicle age or owner history.
Is my vehicle included in this recall?
The only way to confirm is to look up your 17-character VIN at nhtsa.gov/recalls. NHTSA's tool will tell you if VIN-by-VIN this exact recall applies.
How long do I have to get a recall repair done?
There is no expiration on most federal safety recalls. Even if your vehicle is years old and you bought it used, the manufacturer is required to perform the repair at no cost.
Where does the data on this page come from?
All information on this page is sourced directly from the U.S. Department of Transportation public dataset for NHTSA recalls. Last refreshed: 2026-09-28. For the most current official notice, visit nhtsa.gov/recalls.