26V08600002/13/2026
Daimler Trucks North America, LLC (DTNA) is recalling certain Thomas Built Buses 2023-2026 Saf-T-Liner EFX and Saf-T-Liner HDX school buses. The heater hose clamps may not have been tightened properly, causing the hose to disconnect and leak heating coolant inside the passenger compartment.
Model years in this history: 2026, 2025, 2024, 2023
Consequence and remedy
Consequence
Contact with hot heating coolant may burn occupants, increasing the risk of injury.
Remedy
Dealers will inspect and replace the heater hose clamps, as necessary, free of charge. Owner notification letters were mailed April 10, 2026. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is F1030.
26V08700002/13/2026
Daimler Trucks North America, LLC (DTNA) is recalling certain Thomas Built Buses 2023-2025 Saf-T-Liner EFX and 2023-2026 Saf-T-Liner HDX vehicles. The heater hose clamps may not have been tightened properly, causing the hose to disconnect and leak heating coolant inside the passenger compartment.
Model years in this history: 2026, 2025, 2024, 2023
Consequence and remedy
Consequence
Contact with hot heating coolant may burn occupants, increasing the risk of injury.
Remedy
Dealers will inspect and replace the heater hose clamps, as necessary, free of charge. Owner notification letters were mailed April 10, 2026. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is F1030.
25V84900012/09/2025
Daimler Trucks North America, LLC (DTNA) is recalling certain 2025 Thomas Built Buses Saf-T-Liner EFX, 2025-2027 Thomas Built Buses Minotour DRW, 2026 Thomas Built Buses Saf-T-Liner C2 Jouley, Thomas Built Buses HDX, and 2026-2027 Thomas Built Buses Saf-T-Liner C2 school buses equipped with certain QRT-Deluxe and QRT-Max wheelchair restraints. The wheel chair restraint retractor may not lock, preventing the wheelchair from being properly secured.
Model years in this history: 2026
Consequence and remedy
Consequence
An unsecured wheelchair can move during transit, increasing the risk of injury.
Remedy
Dealers will inspect and replace the retractors, as necessary, free of charge. Owner notification letters were mailed February 5, 2026. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is F1028.
25V60400009/11/2025
Daimler Trucks North America, LLC (DTNA) is recalling certain Thomas Built Buses 2025-2026 Saf-T-Liner HDX, Saf-T-Liner C2, 2026 Saf-T-Liner EFX, and Saf-T-Liner C2 Jouley school buses. The tie rod castle nut and cotter pin may not be installed properly, which can result in a loss of vehicle steering control.
Model years in this history: 2025
Consequence and remedy
Consequence
A loss of vehicle steering control increases the risk of a crash.
Remedy
Dealers will inspect and replace the tie rod assembly, as necessary, free of charge. Owner notification letters were mailed November 10, 2025. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is D25R2.
24V55500007/24/2024
Daimler Trucks North America, LLC (DTNA) is recalling certain Thomas Built Buses 2019-2022 Saf-T-Liner C2, Saf-T-Liner EFX, Saf-T-Liner HDX, Minotour DRW, 2020-2022 Saf-T-Liner C2 Jouley, and Minotour SRW school buses. The Emergency Exit Label lettering is too small and may be difficult to read. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 217, "Bus Emergency Exits and Window Retention and Release."
Model years in this history: 2022, 2021, 2020, 2019
Consequence and remedy
Consequence
Emergency exit labels that are difficult to read can prevent or delay the use of the emergency exit, increasing the risk of injury.
Remedy
Dealers will correct the lettering, free of charge. Owner notification letters were mailed September 5, 2024. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL918.
22V76200010/12/2022
Daimler Trucks North America, LLC (DTNA) is recalling certain 2011-2023 Thomas Built EFX and HDX school buses. The exterior roof panel was manufactured with insufficient joint strength. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 221, "School Bus Body Joint Strength."
Model years in this history: 2023, 2022, 2021, 2020, 2019, 2018, 2017, 2016, 2015, 2014, 2013, 2012, 2011
Consequence and remedy
Consequence
A school bus exterior roof panel with insufficient joint strength may separate during a crash, increasing the risk of injury.
Remedy
Dealers will add additional mechanical fasteners to secure the joints, free of charge. Owner notification letters were mailed June 2, 2023. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL957.
22V68800009/14/2022
Daimler Trucks North America LLC (DTNA) is recalling certain 2020-2023 Thomas Built Saf-T-Liner HDX school buses. The rear exterior side-body panel was manufactured with insufficient joint strength. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 221, "School Bus Body Joint Strength."
Model years in this history: 2023, 2022, 2021, 2020
Consequence and remedy
Consequence
A school bus panel with insufficient joint strength may separate during a crash, increasing the risk of injury.
Remedy
Dealers will add additional mechanical fasteners to secure the joints, free of charge. Owner notification letters were mailed November 11, 2022. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall FL953.
22V63400008/19/2022
Daimler Trucks North America LLC (DTNA) is recalling certain 2011-2021 Thomas Built Saf-T Liner HDX school buses. The forward seat barriers may not provide sufficient protection to passengers. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 222, "School Bus Passenger Seating and Crash Protection."
Model years in this history: 2021, 2020, 2019, 2018, 2017, 2016, 2015, 2014, 2013, 2012, 2011
Consequence and remedy
Consequence
Occupants may collide with the front seat barriers with more force than intended during a crash, increasing the risk of injury.
Remedy
Dealers will install a spacer between the seat rail and the seat barrier, free of charge. Owner notification letters were mailed August 25, 2023. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL843. This recall replaces NHTSA recall 19V899.
22V55300007/29/2022
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.
Model years in this history: 2023
Consequence and remedy
Consequence
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.
Remedy
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.
22V51000007/19/2022
Daimler Trucks North America, LLC (DTNA) is recalling certain 2014-23 Thomas Built Buses HDX and 2014-22 EFX school buses equipped with 39-inch S3C seat frames and 3-point flex seatbelts. The passenger seat frames may crack and rotate from fatigue.
Model years in this history: 2023, 2022, 2021, 2020, 2019, 2018, 2017, 2016, 2015, 2014
Consequence and remedy
Consequence
Cracked passenger seat frames may not adequately secure passengers in the event of a crash, increasing the risk of injury.
Remedy
Dealers will secure the seat frames with brackets, free of charge. Owner notification letters were mail December 4, 2023. Owners may contact DTNA's customer service at 1-800-547-0712. DTNA's number for this recall is FL946.
22V27100004/22/2022
Daimler Trucks North America, LLC (DTNA) is recalling certain 2019-2023 Thomas Built Bus HDX school buses. The positive battery cable may be routed improperly, allowing it to chafe against the transmission oil cooler hoses, which can cause an electrical short circuit.
Model years in this history: 2023, 2022, 2021, 2020, 2019
Consequence and remedy
Consequence
An electrical short circuit can increase the risk of a fire.
Remedy
Dealers will inspect and repair the cable routing, as necessary, free of charge. Owner notification letters were mailed January 20, 2023. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL928.
22V27200004/22/2022
Daimler Trucks North America, LLC (DTNA) is recalling certain 2019-2023 Thomas Built Bus HDX commercial buses. The positive battery cable may be routed improperly, allowing it to chafe against the transmission oil cooler hoses, which can cause an electrical short circuit.
Model years in this history: 2023, 2022, 2021, 2020, 2019
Consequence and remedy
Consequence
An electrical short circuit can increase the risk of a fire.
Remedy
Dealers will inspect and repair the cable routing, as necessary, free of charge. Owner notification letters were mailed January 20, 2023. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL929.
21V91400011/22/2021
Daimler Trucks North America, LLC. (DTNA) is recalling one 2020 Thomas Built Buses Saf-T-Liner HDX transit bus. The chassis was assembled without the electronic stability control hardware and software. As such, this vehicle fails to comply with the requirements of Federal Motor Vehicle Safety Standard number 136, "Electronic Stability Control Systems on Heavy Vehicles."
Model years in this history: 2020
Consequence and remedy
Consequence
In certain driving situations, a missing electronic stability control system can increase the risk of a crash.
Remedy
A dealer will install an electronic stability control system, free of charge. The owner notification letter is expected to be mailed January 16, 2022. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL909.
21V91500011/22/2021
Daimler Trucks North America, LLC (DTNA) is recalling one 2021 Thomas Built Buses Saf-T-Liner HDX transit bus. The gross axle weight rating (GAWR) may be improperly stated on the label. As such, this vehicle fails to comply with the requirements of Federal Motor Vehicle Safety Standard number 136, "Electronic Stability Control Systems on Heavy Vehicles."
Model years in this history: 2021
Consequence and remedy
Consequence
The operator may overload the vehicle while referencing the incorrect label, increasing the risk of a crash.
Remedy
A dealer will apply a new label, free of charge. The owner notification letter is expected to be mailed January 16, 2022. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL911.
21V85000011/02/2021
Daimler Trucks North America, LLC (DTNA) is recalling certain 2020-2022 Thomas Built EFX and HDX school buses. The nut for the power cable stud on the alternator may not have been tightened properly, which can cause a loose cable connection.
Model years in this history: 2022, 2021, 2020
Consequence and remedy
Consequence
A loose power cable connection may cause electrical arcing, which can increase the risk of a fire.
Remedy
Dealers will inspect the alternator power cable connection and tighten it if necessary, free of charge. Owner notification letters were mailed on December 17, 2021. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL904.
21V71400009/15/2021
Daimler Trucks North America, LLC (DTNA) is recalling certain 2022 Thomas Built Buses Saf-T-Liner HDX school buses. The fan drive pulley assembly bolts may be incorrect or improperly installed. Incorrect or improperly installed bolts may lead to a loose fan belt, resulting in a disabled bus.
Model years in this history: 2022
Consequence and remedy
Consequence
A disabled school bus may require an evacuation procedure in an uncontrolled traffic situation, increasing the risk of injury.
Remedy
DTNA will inspect and repair the fan drive pulley assembly mounting bolts as necessary, free of charge. Owner notification letters were mailed on November 12, 2021. Owners may contact DTNA's customer service at 1-800-547-0712. DTNA's number for this recall is FL-902.
21V65900008/25/2021
Daimler Trucks North America, LLC (DTNA) is recalling certain 2016-2021 Thomas Built Buses Saf-T-Liner HDX school buses equipped with an ISL or L9 engine. The power steering hose may be routed with inadequate clearance between the hose and the power cables.
Model years in this history: 2021, 2020, 2019, 2018, 2017, 2016
Consequence and remedy
Consequence
A worn power steering hose increases the risk of a fire.
Remedy
DTNA will inspect the power steering hose routing and modify it as necessary, free of charge. Owner notification letters are expected to be mailed on October 17, 2021. Owners may contact DTNA's customer service at 1-800-547-0712. DTNA's number for this recall is FL898.
21V66000008/25/2021
Daimler Trucks North America, LLC (DTNA) is recalling certain 2016-2021 Thomas Built Buses Saf-T-Liner HDX transit buses equipped with an ISL or L9 engine. The power steering hose may be routed with inadequate clearance between the hose and the power cables, potentially damaging the power steering hose.
Model years in this history: 2021, 2020, 2019, 2018, 2017, 2016
Consequence and remedy
Consequence
A damaged power steering hose can leak, and increase the risk of a fire.
Remedy
DTNA will inspect the power steering hose routing and modify it as necessary, free of charge. Owner notification letters are expected to be mailed on October 17, 2021. Owners may contact DTNA's customer service at 1-800-547-0712. DTNA's number for this recall is FL898.
21V46200006/17/2021
Daimler Trucks North America, LLC (DTNA) is recalling certain 2018-2022 Thomas Built Saf-T-Liner HDX School Buses. These school buses may have been manufactured with an incorrect passenger seat configuration that does not provide the proper amount of seat back protection. As such, these school buses fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 222, "School Bus Passenger Seating and Crash Protection."
Model years in this history: 2022, 2021, 2020, 2019, 2018
Consequence and remedy
Consequence
In the event of a crash, the seats may not adequately protect the occupants, increasing the risk of injury.
Remedy
Dealers will replace the rear passenger seats, free of charge. No owner notification will be distributed, all units were repaired on August 12, 2021. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-892.
21V37000005/19/2021
Daimler Trucks North America, LLC (DTNA) is recalling certain 2021-2022 Thomas Built Saf-T-Liner HDX School Buses and Saf-T-Liner C2 School Buses. The tie rod clamps may be loose, which could result in loose tie rod ends that could break or detach.
Model years in this history: 2022, 2021
Consequence and remedy
Consequence
Detached or broken tie rod ends can result in steering loss, increasing the risk of a crash.
Remedy
Dealers will replace the tie rod clamp bolts and nuts, free of charge. Owner notification letters were mailed December 23, 2021. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-888.
21V32700005/07/2021
Daimler Trucks North America, LLC (DNTA) is recalling certain 2018-2021 Thomas Built Buses Saf-T-Liner HDX School Buses. The sealing washer may not seat correctly in the pilot bore holes, allowing the high pressure fuel rail assembly to leak.
Model years in this history: 2021, 2020, 2019, 2018
Consequence and remedy
Consequence
A fuel leak in the presence of an ignition source increases the risk of a fire.
Remedy
Dealers will replace the fuel rail and fuel lines, free of charge. Interim owner notification letters were mailed on June 21, 2021. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-886.
21V25500004/12/2021
Daimler Trucks North America, LLC (DTNA) is recalling certain 2021-2022 Thomas Built Buses Saf-T-Liner C2, Saf-T-Liner EFX, and Saf-T-Liner HDX school buses. The steering arm and tie rod bolts may have a defective seam that can fracture.
Model years in this history: 2022, 2021
Consequence and remedy
Consequence
A fractured bolt may cause a loss of steering, increasing the risk of a crash.
Remedy
DTNA will notify owners, and dealers will replace the tie rod arm bolts and steering arm, free of charge. The recall began on June 10, 2021. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-884.
21V01700001/20/2021
Daimler Trucks North America, LLC (DTNA) is recalling certain 2021 Thomas Built Buses Saf-T-Liner HDX and EFX school buses. On certain vehicles, one of the six brake caliper mounting bolts on the driver side steer axle may have been incorrectly tightened.
Model years in this history: 2021
Consequence and remedy
Consequence
The loose bolt could result in the other caliper bolts to loosen. Insufficiently tightened bolts may not provide adequate clamping force between the brake caliper and brake anchor plate, resulting in reduced brake effectiveness, increasing the risk of a crash.
Remedy
DTNA will notify owners, and dealers will inspect and repair as necessary, free of charge. The recall began March 17, 2021. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-873.
20V25200005/05/2020
Daimler Trucks North America, LLC (DTNA) is recalling certain 2010-2020 Thomas Built Buses Saf-T-Liner HDX school buses. The lettering on the instruction label for the rear emergency exit window may be too small. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 217, "Bus Emergency Exits and Window Retention and Release."
Model years in this history: 2020, 2019, 2018, 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010
Consequence and remedy
Consequence
Small lettering may be difficult for occupants to read, delaying the reaction time to open the exit, increasing the risk of injury.
Remedy
DTNA will notify owners and mail a new label to attach to the exit window by first class mail, free of charge. DTNA issued owners an interim notification on June 17, 2020. The recall began September 10, 2020. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-849.
