2021 Thomas Built Buses Saf-T-Liner HDX recalls
16 NHTSA recall campaigns naming the 2021 Thomas Built Buses Saf-T-Liner HDX. Last verified Jul 30, 2026. Recalls may apply only to certain VIN ranges — always confirm with a VIN check.
Units are totals reported across campaigns mentioning this model — NHTSA does not always break unit counts down by model.
Affected components
Nearby model years
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Campaigns
- Jul 24, 2024Crash risk2019–2022 Thomas Built Buses Minotour DRW, 2020–2022 Thomas Built Buses Minotour SRW, 2019–2022 Thomas Built Buses Saf-T-Liner C2 and 3 other models — Equipment
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."
24V555000 · 27K units · Daimler Trucks North America, LLC
- Oct 12, 2022Crash risk2011–2023 Thomas Built Buses Saf-T-Liner Efx, 2011–2023 Thomas Built Buses Saf-T-Liner HDX — Structure
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."
22V762000 · 18K units · Daimler Trucks North America, LLC
- Sep 14, 2022Crash risk2020–2023 Thomas Built Buses Saf-T-Liner HDX — Structure
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."
22V688000 · 1K units · Daimler Trucks North America, LLC
- Aug 19, 2022Crash risk2011–2021 Thomas Built Buses Saf-T-Liner HDX — Seats
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."
22V634000 · 8K units · Daimler Trucks North America, LLC
- Jul 19, 2022Crash risk2014–2022 Thomas Built Buses Saf-T-Liner Efx, 2014–2023 Thomas Built Buses Saf-T-Liner HDX — Seats
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.
22V510000 · 2K units · Daimler Trucks North America, LLC
- Apr 22, 2022Fire risk2019–2023 Thomas Built Buses Saf-T-Liner HDX — Electrical System
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.
22V271000 · 3K units · Daimler Trucks North America, LLC
- Apr 22, 2022Fire risk2019–2023 Thomas Built Buses Saf-T-Liner HDX — Electrical System
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.
22V272000 · 138 units · Daimler Trucks North America, LLC
- Nov 22, 2021Crash risk2021 Thomas Built Buses Saf-T-Liner HDX — Equipment
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."
21V915000 · 1 unit · Daimler Trucks North America, LLC
- Nov 2, 2021Fire risk2020–2022 Thomas Built Buses Saf-T-Liner Efx, 2020–2022 Thomas Built Buses Saf-T-Liner HDX — Electrical System
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.
21V850000 · 1K units · Daimler Trucks North America, LLC
- Aug 25, 2021Fire risk2016–2021 Thomas Built Buses Saf-T-Liner HDX — Steering
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.
21V660000 · 114 units · Daimler Trucks North America, LLC
- Aug 25, 2021Fire risk2016–2021 Thomas Built Buses Saf-T-Liner HDX — Steering
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.
21V659000 · 2K units · Daimler Trucks North America, LLC
- Jun 17, 2021Crash risk2018–2022 Thomas Built Buses Saf-T-Liner HDX — 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."
21V462000 · 9 units · Daimler Trucks North America, LLC
- May 19, 2021Crash risk2021–2022 Thomas Built Buses Saf-T-Liner C2, 2021–2022 Thomas Built Buses Saf-T-Liner HDX — Steering
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.
21V370000 · 479 units · Daimler Trucks North America, LLC
- May 7, 2021Fire risk2018–2021 Thomas Built Buses Saf-T-Liner HDX — Fuel System, Diesel
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.
21V327000 · 1K units · Daimler Trucks North America, LLC
- Apr 12, 2021Crash risk2021–2022 Thomas Built Buses Saf-T-Liner C2, 2021–2022 Thomas Built Buses Saf-T-Liner Efx, 2021–2022 Thomas Built Buses Saf-T-Liner HDX — Steering
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.
21V255000 · 1K units · Daimler Trucks North America, LLC
- Jan 20, 2021Crash risk2021 Thomas Built Buses Saf-T-Liner Efx, 2021 Thomas Built Buses Saf-T-Liner HDX — Service Brakes, Hydraulic
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.
21V017000 · 6 units · Daimler Trucks North America, LLC