Does the 2023 Thomas Built Buses SAF-T-Liner HDX have any recalls?

8 recalls found in NHTSA data as of September 22, 2026, covering: engine and engine cooling, structure, seats, electrical system. Recalls apply to the model and year; whether a particular vehicle is included, and whether it has been repaired, depends on its VIN.

How do I check if my 2023 Thomas Built Buses SAF-T-Liner HDX recall has been fixed?

Enter your 17-character VIN at nhtsa.gov/recalls, or ask a Thomas Built Buses dealer. Recall repairs are free. NHTSA's VIN search doesn't list recalls that were already repaired.

How many complaints have owners filed about the 2023 Thomas Built Buses SAF-T-Liner HDX?

0 complaints filed with NHTSA. Complaints are unverified reports from the public that NHTSA uses to decide what to investigate.

2023 Thomas Built Buses SAF-T-Liner HDX recalls

Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.

8 recalls found in NHTSA data as of September 22, 2026

For the 2023 Thomas Built Buses SAF-T-Liner HDX. These apply to the model and year, not to one particular vehicle: check your VIN to see whether yours is included and whether it has been repaired.

Has your Thomas Built Buses been repaired?

Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.

Check your VIN with NHTSA

NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Thomas Built Buses dealer can also check your VIN. Recall repairs are free.

2023 Thomas Built Buses SAF-T-Liner HDX recalls, newest first

February 13, 2026NHTSA 26V08700052 vehicles potentially affected

Engine and engine cooling › Cooling system › Hoses/lines/piping/fittings

Summary: 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.
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.

This recall on nhtsa.gov

February 13, 2026NHTSA 26V0860002,843 vehicles potentially affected

Engine and engine cooling › Cooling system › Hoses/lines/piping/fittings

Summary: 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.
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.

This recall on nhtsa.gov

October 12, 2022NHTSA 22V76200017,613 vehicles potentially affected

Structure › Body › Roof and pillars

Summary: 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."
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.

This recall on nhtsa.gov

September 14, 2022NHTSA 22V6880001,259 vehicles potentially affected

Structure › Body

Summary: 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."
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.

This recall on nhtsa.gov

July 29, 2022NHTSA 22V55300071 vehicles potentially affected

Engine and engine cooling › Engine › Engine control module (ECU/ECM)

Summary: 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.
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.

This recall on nhtsa.gov

July 19, 2022NHTSA 22V5100001,806 vehicles potentially affected

Seats › Mid/rear assembly

Summary: 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.
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.
Components: Seats › Mid/rear assembly; Seats

This recall on nhtsa.gov

April 22, 2022NHTSA 22V272000138 vehicles potentially affected

Electrical system › 12V/24V/48V battery › Cables

Summary: 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.
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.

This recall on nhtsa.gov

April 22, 2022NHTSA 22V2710002,943 vehicles potentially affected

Electrical system › 12V/24V/48V battery › Cables

Summary: 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.
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.

This recall on nhtsa.gov

Owner complaints

No owner complaints about the 2023 Thomas Built Buses SAF-T-Liner HDX were found in NHTSA’s complaint data.

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Questions

Does the 2023 Thomas Built Buses SAF-T-Liner HDX have any recalls?: 8 recalls found in NHTSA data as of September 22, 2026, covering: engine and engine cooling, structure, seats, electrical system. Recalls apply to the model and year; whether a particular vehicle is included, and whether it has been repaired, depends on its VIN.
How do I check if my 2023 Thomas Built Buses SAF-T-Liner HDX recall has been fixed?: Enter your 17-character VIN at nhtsa.gov/recalls, or ask a Thomas Built Buses dealer. Recall repairs are free. NHTSA's VIN search doesn't list recalls that were already repaired.
How many complaints have owners filed about the 2023 Thomas Built Buses SAF-T-Liner HDX?: 0 complaints filed with NHTSA. Complaints are unverified reports from the public that NHTSA uses to decide what to investigate.