2020 THOMAS BUILT BUSES SAF-T-LINER HDX

EQUIPMENT:OTHER:LABELS

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."

Risk: Emergency exit labels that are difficult to read can prevent or delay the use of the emergency exit, increasing the risk of injury.

ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES

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.

Risk: An electrical short circuit can increase the risk of a fire.

ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES

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.

Risk: An electrical short circuit can increase the risk of a fire.

STRUCTURE:BODY:ROOF AND PILLARS

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."

Risk: A school bus exterior roof panel with insufficient joint strength may separate during a crash, increasing the risk of injury.

ELECTRONIC STABILITY CONTROL (ESC)

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."

Risk: In certain driving situations, a missing electronic stability control system can increase the risk of a crash.

FUEL SYSTEM, DIESEL:FUEL INJECTION SYSTEM:FUEL RAIL

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.

Risk: A fuel leak in the presence of an ignition source increases the risk of a fire.

STEERING:HYDRAULIC POWER ASSIST:HOSE, PIPING, AND CONNECTIONS

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.

Risk: A worn power steering hose increases the risk of a fire.

SEATS

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."

Risk: In the event of a crash, the seats may not adequately protect the occupants, increasing the risk of injury.

ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR

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.

Risk: A loose power cable connection may cause electrical arcing, which can increase the risk of a fire.

STEERING:HYDRAULIC POWER ASSIST:HOSE, PIPING, AND CONNECTIONS

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.

Risk: A damaged power steering hose can leak, and increase the risk of a fire.

EQUIPMENT:OTHER:LABELS

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."

Risk: Small lettering may be difficult for occupants to read, delaying the reaction time to open the exit, increasing the risk of injury.

SERVICE BRAKES, AIR:DISC:CALIPER

Daimler Trucks North America LLC (DTNA) is recalling certain 2019-2020 Thomas Built Saf-T-Liner HDX, EFX, and C2 school buses equipped with air disc brakes. The brake caliper mounting bolts may have been insufficiently tightened.

Risk: Loose brake caliper mounting bolts can reduce brake effectiveness, increasing the risk of a crash.

POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER

Daimler Trucks North America LLC (DTNA) is recalling certain 2018-2020 Thomas Built Saf-T-Liner HDX school buses equipped with Detroit DD8 Engines and Allison Transmissions. The Flex-Plate/Torque Converter fasteners may have been insufficiently tightened.

Risk: The loose bolts can become lodged in the starter, disabling the bus, resulting in an evacuation in an uncontrolled traffic situation, increasing the risk of an injury.

STRUCTURE:EMERGENCY:ESCAPE/EGRESS/EXIT

Daimler Trucks North America LLC (DTNA) is recalling certain 2019-2020 Thomas Built Minotour, Saf-T Liner C2, Saf-T Liner EFX, and Saf-T Liner HDX school buses equipped with Safe Fleet Prolo Roof Escape hatches. Due to a manufacturing issue, the roof hatch external handle may unexpectedly break under reasonable use.

Risk: If the roof hatch external handle breaks, in the event of an emergency, the hatch cannot be easily opened from outside the vehicle, increasing the risk of injury.