NHTSA·Commercial vehicles·April 9, 2026

Thomas Built Buses recalls 2024–2027 Saf-T-Liner C2 school buses over warning lights that may switch off

Software can misread a bump to the door switch and turn off the amber and red warning lights and the stop sign arm, so other drivers may not be warned the bus is slowing, raising the risk of a crash or injury.

What to do

Dealers will update the warning light software for free. Owners can call DTNA customer service at 1-800-547-0712 and refer to recall number F1032.

Look up your car to see every recall for its make, model and year.

Recall details

Product
Thomas Built Buses Saf-T-Liner C2 2024–2027
Hazard
Warning lights and a stop sign arm that fail to activate will not warn other drivers the school bus is slowing down, increasing the risk of a crash or injury.
Units
3,285 vehicles
Owner notification
June 1, 2026
Reported to NHTSA
April 9, 2026
Identifiers
  • NHTSA campaign number: 26V228000
  • Manufacturer campaign number: F1032
  • Model years: 2024–2027

The headline, summary and steps above are written in plain English from the official notice below. Identifiers are copied exactly as the agency published them. Always check the official notice before you act.

Official notice

The notice's own wording from NHTSA.

Component
EXTERIOR LIGHTING:HAZARD FLASHING WARNING LIGHTS
Defect
Daimler Trucks North America, LLC (DTNA) is recalling certain Thomas Built Buses 2024-2027 Saf-T-Liner C2 school buses. The vehicle's software may misinterpret contact if the door switch is bumped, deactivating the amber and red warning lights and the stop sign arm.
Consequence
Warning lights and a stop sign arm that fail to activate will not warn other drivers the school bus is slowing down, increasing the risk of a crash or injury.
Corrective action
Dealers will update the amber and red warning light software, free of charge. Owner notification letters were mailed June 2, 2026. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is F1032.

Related recalls