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Thomas Built Buses Saf-T-Liner HDX2 Recall 26V407: School Bus Entrance Door May Fail to Open or Close

NHTSA campaign 26V407, reported June 26, 2026, 117 vehicles potentially affected.

What this recall means for you

The entrance door on certain school buses may fail to open or close when its switch is activated. A door that does not work properly raises the risk of injury to occupants in a crash.

The remedy is a replacement of the door relay for the entrance door system. Dealers will perform the repair free of charge. Interim notification letters were mailed August 25, 2026, and additional letters will follow once the final remedy is available, which is anticipated in October 2026. You can contact DTNA customer service at 1-800-574-0712, referencing recall number F1035. You should also check your vehicle's 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 26V407Daimler Trucks North America, LLC
Component
ELECTRICAL SYSTEM:WIRING:SWITCHES/KNOBS/BUTTONS; LATCHES/LOCKS/LINKAGES:DOORS:LATCH
Problem
Daimler Trucks North America, LLC (DTNA) is recalling certain 2026-2027 Thomas Built SAF-T-LINER HDX2 and Thomas Built SAF-T-LINER EFX2 school buses. The entrance door may fail to open or close when the switch is activated.
Risk
A door that fails to open or close increases the risk of injury to occupants in a crash.
Remedy
Dealers will replace the door relay for the entrance door system, free of charge. Interim notification letters, notifying owners of the safety risk, were mailed August 25, 2026. Additional letters will be sent once the final remedy is available, anticipated October 2026. Owners may contact DTNA customer service at 1-800-574-0712. DTNA's number for this recall is F1035.

Affected vehicles

Thomas Built Buses Saf-T-Liner HDX220262027