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Thomas Built Buses Saf-T-Liner C2 Recall 26V109: Heater Hose May Rupture, Leaking Hot Coolant Into Cabin

NHTSA campaign 26V109, reported February 24, 2026, 70 vehicles potentially affected.

What this recall means for you

A heater hose on certain 2027 Saf-T-Liner C2 school buses may rupture. When it does, hot engine coolant can leak inside the passenger compartment.

Contact with the hot coolant may burn occupants, which increases the risk of injury. Owners should take this recall seriously, especially where children ride the bus.

Dealers will inspect the heater hose and replace it if necessary, at no cost to the owner. Owner notification letters were mailed April 24, 2026. For questions, contact DTNA customer service at 1-800-547-0712 and reference recall F1031, or check your vehicle identification number (VIN) for open recalls.

Check whether this recall is open on your vehicle

The repair is normally free at an authorized dealer.

Official recall notice

Safety recall 26V109Daimler Trucks North America, LLC
Component
ENGINE
Problem
Daimler Trucks North America, LLC (DTNA) is recalling certain Thomas Built Buses 2027 Saf-T-Liner C2 school buses. The heater hose may rupture, which can result in hot coolant leaking inside the passenger compartment.
Risk
Contact with hot coolant may burn occupants, increasing the risk of injury.
Remedy
Dealers will inspect and replace the heater hose, as necessary, free of charge. Owner notification letters were mailed April 24, 2026. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is F1031.

Affected vehicles

Thomas Built Buses Saf-T-Liner C22027