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💥 Crash riskNHTSA 26V620📅 Sep 28, 2026

2026–2027 Mack Anthem AN (4) & 2026–2027 Mack Pioneer PR (4) recall: brakes

⚠️ What's 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.

💥 The risk

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.

Is the fix free? Yes. Safety recall repairs are free at any authorized dealer under federal law, including parts and labor. (Vehicles more than 15 years old when the recall was announced can be excluded, but most manufacturers still fix them.)
NHTSA campaign
26V620000
Manufacturer recall #
SC0500
Manufacturer
Mack Trucks, Inc.
Vehicles affected
850
Component
SERVICE BRAKES, ELECTRIC:SOFTWARE/PROGRAMMING
Owner phone
1-800-866-1177
NHTSA hotline
1-888-327-4236
Built
Feb 24, 2025 – Sep 11, 2026
Recall started by
MFR

Vehicles in this recall

Is your car affected? Recalls apply to specific VINs. Check my VIN

FAQ

Is the 26V620 recall repair free?

Yes. Safety recall repairs are free at any authorized dealer under federal law, including parts and labor. (Vehicles more than 15 years old when the recall was announced can be excluded, but most manufacturers still fix them.)

Which vehicles are included in recall 26V620?

2026–2027 Mack Anthem AN (4) & 2026–2027 Mack Pioneer PR (4). 850 vehicles may be affected. Check your exact car with its 17-character VIN.

What should I do?

Check your VIN, then call any authorized Mack dealer to book the free repair or call the manufacturer at 1-800-866-1177.