Thomas Built Saf-T-Liner Efx School Bus, Saf-T-Liner HDX School Bus: Heater and Defroster

Affects Thomas Built Saf-T-Liner Efx School Bus, Saf-T-Liner HDX School Bus · 2023–2025 — about 13 vehicles.

The hazard

Issue: On certain school buses, the heater hose clamps may not have been tightened properly. As a result, the heater hose could disconnect, and coolant could leak into the bus. Safety Risk: A coolant leak could create the risk of a burn injury. Corrective Actions: Daimler Truck North America (DTNA) will notify owners by mail and advise you to take your school bus to a DTNA authorized service facility to inspect and, if necessary, tighten or replace the heater hose clamps.

What to do

Contact your dealer; the remedy details were not included in the filing.

Critical — crash/injury risk now High — injury risk; see remedy Moderate — fix at next service Low — minor / informational