NHTSA Vehicles recall ·
2026–2027 Mack Anthem AN (4) and 1 more recall: Software Calculation Error May Cause Reduced Braking Performance
- Recall number
- 26V620000
- Date
- Manufacturer
- Mack Trucks, Inc.
- Category
- Vehicles › Service Brakes
- Recall type
- Vehicle
- Units affected
- 850
- Hazard tags
- Crash risk
Read the official NHTSA notice ↗
Product
Service Brakes, Electric
Affected vehicles
| Make | Model | Model years |
|---|---|---|
| Mack | Anthem AN (4) | 2026–2027 |
| Mack | Pioneer PR (4) | 2026–2027 |
Not every vehicle of these models is affected. Enter your 17-character VIN on NHTSA.gov to check your vehicle.
Why was it recalled?
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.
Consequence
Reduced braking performance can require a greater distance to stop, increasing the risk of a crash.
What should you do?
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.
Manufacturer campaign number
SC0500
Source: NHTSA (vehicles), recall 26V620000. Official notice. Republished from public data; RecallFlag is not affiliated with the NHTSA.