Mack Trucks, Inc.: Steering
Mack Trucks, Inc. reported this defect to federal regulators on Aug 11, 2025 and put the number of vehicles at risk at 32. The repair is free for as long as the recall stands.
The defect
Mack Trucks, Inc. (Mack) is recalling certain 2025 Anthem and 2025-2026 Pioneer vehicles. The dynamic steering and oversteer guidance feature may malfunction and cause a loss of steering control.
The risk
A loss of steering control increases the risk of a crash.
The remedy
The oversteer guidance feature will be disabled through an over-the-air (OTA) update or by a dealer, free of charge. Owner notification letters were mailed August 21, 2025. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0483.
3 model years covered
Newest first| Vehicle | Complaints | Recalls | Fires | Crashes |
|---|---|---|---|---|
| 2026 Mack Pioneer PR (4) | 0 | 9 | 0 | 0 |
| 2025 Mack Anthem (an) | 0 | 8 | 0 | 0 |
| 2025 Mack Pioneer PR (4) | 0 | 12 | 0 | 0 |
What this page is, and what to do next
A recall is not an opinion. It is a Part 573 report a manufacturer is required by federal law to file once it decides a defect poses an unreasonable risk to safety, and it commits them to repairing the vehicle at no cost to the owner. The three passages above are the manufacturer’s own wording as published by NHTSA.
This page describes the campaign. It cannot tell you whether one particular car has already been through the shop — that is tracked by VIN, and only the manufacturer knows it. Check yours at nhtsa.gov/recalls or with a franchised dealer, quoting campaign number 25V521000.
Full record for the 2026 Mack Pioneer PR (4) → · Recalls carrying a do-not-drive advisory → · Where this data comes from →