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.
Compare the exact product and every lot, model, serial range or date listed in the official notice. A similar name alone does not establish that your product is included.
Identifiers in this source record
2026 MACK PIONEER PR (4)Manufacturer campaign: SC0483Part: Software Parameter Feature (Oversteer Guidance) P1HF92025 MACK ANTHEM (AN)2025 MACK PIONEER PR (4)Vehicle: VIN plus the year, make and model. Car seat or equipment: Manufacturer, model and production date from the label. Tire: Brand, tire line, size and DOT tire identification number.
Read the vehicles identification guideWhy this notice was issued
A loss of steering control increases the risk of a crash.
Official action
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.
Follow the specific instructions and use the contact details in the announcement if you need help confirming a match or arranging the remedy.
Read the full official instructionsProduct & source details
- Product
- 2026 MACK PIONEER PR (4)
- Brand or manufacturer
- MACK
- Source
- NHTSA
- Notice type
- Recall
- Source reference
- 25V521000
- Category
- Vehicles & road safety