Daimler Trucks Recalls Thomas Built Buses Over Hot Coolant Leak and Burn Risk
Areazine synthesizes this NHTSA vehicle recall directly from NHTSA's official public data feed. See our methodology for full source attribution and refresh cadence.
Daimler Trucks North America is recalling 364 Thomas Built Buses because improperly tightened heater hose clamps may leak hot coolant into the passenger compartment.
What this NHTSA vehicle recall tells you, and what most readers miss
This notice was issued by NHTSA on April 6, 2026 and geographically references United States. Its severity classification of "high" signals how the issuing agency weighs the risk of harm if no action is taken - "critical" and "high" tier alerts typically carry direct consumer actions, while "medium" and "low" tend toward informational guidance or monitoring advisories. The category it belongs to - Vehicle Recalls - determines the consumer-protection framework behind it, which shapes what remedies (refunds, replacements, repairs, or the recall itself) are available to affected consumers and which agency holds statutory responsibility for enforcement.
Most readers skim a notice like this, check whether they are personally affected, and move on. The more useful lens is to verify its scope, source, and timestamp, then compare related notices without assuming that one record proves a broader trend.
Areazine pairs this record with the original agency URL so you can check the primary source before acting. Its related labels are recall, product-safety, nhtsa, Buses.
What Happened
Daimler Trucks North America, LLC (DTNA) has issued a recall for specific Thomas Built Buses models due to a defect in the engine cooling system. According to the National Highway Traffic Safety Administration (NHTSA), heater hose clamps on these vehicles may not have been tightened properly during assembly. This failure can cause the hose to disconnect, leading to the leakage of hot heating coolant into the passenger compartment.
Which Products Are Affected
The recall affects a total of 364 units. The specific models and years involved are:
- Thomas Built Buses Saf-T-Liner EFX: Model years 2023, 2024, and 2025.
- Thomas Built Buses Saf-T-Liner HDX: Model years 2023, 2024, 2025, and 2026.
What You Should Do
Owners of the affected vehicles are encouraged to contact DTNA customer service at 1-800-547-0712. The manufacturer's internal identification number for this recall is F1030. While the remedy is currently under development, DTNA expects to mail official owner notification letters on April 14, 2026.
Why This Matters
This recall is significant because the leakage of hot coolant into the passenger area poses a direct threat to occupants. Contact with the hot fluid can cause serious burns, increasing the risk of injury for anyone on board the vehicle.
Source
Information provided by the National Highway Traffic Safety Administration (NHTSA) under Campaign Number 26V087000.
Original source: NHTSA Official Notice ↗
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