THOMAS BUILT BUSES 2023 THOMAS BUILT BUSES SAF-T-LINER HDX Recall
Check Your Product
According to the National Highway Traffic Safety Administration (NHTSA)
Product
2023 THOMAS BUILT BUSES SAF-T-LINER HDX
Brand
THOMAS BUILT BUSES
Lot Codes / Batch Numbers
Not specified in NHTSA notice. Check official source for details.
Products Sold
Model Year 2023
Daimler Trucks North America, LLC is recalling certain 2023 THOMAS BUILT BUSES SAF-T-LINER HDX vehicles due to engine and engine cooling:engine:engine control module (ecu/ecm) issues. Unexpected engine shut down can increase the risk of a crash. Additionally, a disabled school bus may require an evacuation procedure in an uncontroll.
Summary derived from NHTSA notice
Reason for Recall
As stated by NHTSA
Daimler Trucks North America, LLC (DTNA) is recalling certain 2023 Thomas Built Saf-T-Liner HDX and Saf-T-Liner C2 school buses. The engine control module (ECM) may experience an internal short-circuit, which can result in an unexpected engine shut down.
Reported concern (NHTSA)
Unexpected engine shut down can increase the risk of a crash. Additionally, a disabled school bus may require an evacuation procedure in an uncontrolled traffic situation, increasing the risk of injury to passengers.
Recommended Action
Per NHTSA guidance
Cummins will replace the ECM, free of charge. Owner notification letters are expected to be mailed September 26, 2022. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-949.
Verify this information on the official source
For complete details and official instructions, check the National Highway Traffic Safety Administration (NHTSA) directly.
View official NHTSA recall noticePage updated: Jan 10, 2026