Daimler Trucks Recalls Thomas Built Buses Due to Hot Coolant Leak Risk

Vehicle Recalls high NHTSA · · United States

Daimler Trucks North America is recalling over 2,800 school buses because improperly tightened heater hose clamps could leak hot coolant into the passenger compartment.

What Happened

Daimler Trucks North America, LLC (DTNA) is recalling specific Thomas Built Buses school buses due to a manufacturing defect in the cooling system. The heater hose clamps on these vehicles may not have been tightened properly. This condition can cause the hose to disconnect, resulting in hot heating coolant leaking inside the passenger compartment.

Which Products Are Affected

The recall involves approximately 2,843 units. The following models and years are affected:

  • Thomas Built Buses Saf-T-Liner EFX: Model years 2023, 2024, 2025, and 2026.
  • Thomas Built Buses Saf-T-Liner HDX: Model years 2023, 2024, 2025, and 2026.

Official identification numbers for this recall include NHTSA Campaign Number 26V086000 and DTNA recall number F1030.

What You Should Do

DTNA is currently developing a remedy for the loose hose clamps. Owner notification letters are expected to be mailed by April 14, 2026. In the meantime, owners may contact DTNA customer service at 1-800-547-0712 to discuss the recall and any safety concerns.

Why This Matters

This defect poses a significant safety risk to passengers. Contact with hot heating coolant can cause serious burns to occupants, increasing the likelihood of injury inside the vehicle.

Source

This information is based on official reports from the National Highway Traffic Safety Administration (NHTSA).

Source: NHTSA Official Notice