According to the National Highway Traffic Safety Administration (NHTSA), the recall affects nearly 2,500 Volvo VN trucks from model years 2025–26, along with several dozen 2025 Mack Anthems and 2025–26 Mack Pioneers.

At the center of the recall is a problem with the dynamic steering and oversteer guidance feature. The system, designed to help stabilize steering, may malfunction. If the guidance corrects an oversteer input, it could continue pulling the wheel in the opposite direction instead of stopping once balance is restored.

This malfunction raises a serious risk: if the driver doesn’t immediately counteract the steering, control of the truck could be lost. There are currently no warning indicators to alert drivers if their truck has the defect.

Both manufacturers identified the issue in July and launched an investigation. So far, there’s been only one field report related to the defect, and no accidents, injuries, or warranty claims have been tied to the problem.

As of August 11, the recommended fix is to disable the oversteer guidance feature. Volvo and Mack are addressing this through over-the-air software updates. In addition, the feature has already been removed from all new truck orders going forward.

Owners of affected trucks will begin receiving official recall notices on October 5. Both manufacturers also have reimbursement programs in place to cover repairs that may have been completed before the recall was issued.

For questions, owners can contact:

• Volvo Trucks customer service at 800-528-6586, recall number RVXX2506
• Mack customer service at 800-866-1177, recall number SC0483

NHTSA recall numbers are 25V520 for Volvo and 25V521 for Mack.

Source: Land Line Media

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Details from the National Highway Traffic Safety Administration (NHTSA) show that more than 1,000 vehicles are involved. The recall impacts 2024–2026 LT models and 2025 RH models. On these trucks, the Hill Start Assist exhaust port can become blocked by ice or road debris. If that happens, the service brakes might be released slowly or not at all.

Hill Start Assist is designed to keep a truck from rolling backward when starting on an incline. The feature holds the brake for a short time after the pedal is released. Once the driver applies the accelerator, the service brakes disengage for a smoother start.

The NHTSA warns that if the brakes remain engaged while the truck is in motion, the likelihood of a crash increases. The recall notice does not confirm any crashes linked to this problem.

The issue affects trucks equipped with Eaton or International automated manual transmissions that also have electronic stability control or automatic traction control. According to International, roughly 97% of the recalled units are LT series models, with the remainder being RH trucks.

Dealers will repair the defect by relocating the Hill Start Assist valve exhaust at no cost to the owner. Notification letters are set to be mailed on September 29.

Truck owners can get more details by contacting International’s customer service at 800-448-7825 and referencing recall number 25508. NHTSA’s reference for this recall is 25V501.

The defect was discovered in April following a review of a field service report that noted brake drag at the start of a shift. An investigation found that valves positioned outside the tractor’s frame rails are more vulnerable to road spray and debris. Since the same valve operates during adaptive cruise control, air could be trapped during light braking.

Source: Land Line Media

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