NHTSA safety recall
Recall 26V620000: SERVICE BRAKES, ELECTRIC:SOFTWARE/PROGRAMMING
Mack Trucks, Inc. · Reported to NHTSA Sep 28, 2026
Recalls apply to specific vehicles, not to every vehicle of a model year. Check your VIN with NHTSA or your manufacturer's dealer to confirm whether a recall affects your vehicle.
Check a VIN on NHTSA.govWhat this recall covers
NHTSA's campaign record, quoted as published
The 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.
The risk
Reduced braking performance can require a greater distance to stop, increasing the risk of a crash.
The remedy
Dealers will install new software to disable the dynamic trailer braking calculations, free of charge. Owner notification letters were mailed October 29, 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.
A safety recall is issued when a manufacturer or NHTSA determines that a vehicle has a safety-related defect or does not comply with a federal motor vehicle safety standard. Recall repairs are free. Whether a specific vehicle is covered depends on its VIN — a recall listed for a model year does not necessarily apply to every vehicle of that year.
Campaign details
Identifiers and dates as filed with NHTSA
- Manufacturer
- Mack Trucks, Inc.
- Manufacturer's campaign number
- SC0500
- NHTSA campaign number
- 26V620000
- Units potentially affected
- 850
- Report received
- Sep 28, 2026
- Production range
- Feb 24, 2025 – Sep 26, 2026
- Campaign type
- Vehicle
- Federal safety standard (FMVSS)
- Not recorded
Vehicles covered
4 model years across 2 models
Recalls apply to specific vehicles, not to every vehicle of a model year. Check your VIN with NHTSA or your manufacturer's dealer to confirm whether a recall affects your vehicle.