Vehicle safety recalls · NHTSA

2023 Thomas Built Buses SAF-T-Liner HDX recalls (6)

6 NHTSA safety recalls cover the 2023 Thomas Built Buses SAF-T-Liner HDX. Every recall repair is free at any Thomas Built Buses dealer.

6recalls

0owner complaints

26+service bulletins

0do-not-drive / park-outside

Is yours affected? Recalls cover ranges of VINs, not every 2023 Thomas Built Buses SAF-T-Liner HDX. Check your SAF-T-Liner HDX by VIN and confirm open recalls at NHTSA.gov.

Every 2023 Thomas Built Buses SAF-T-Liner HDX recall

Each campaign as NHTSA published it: what is wrong, what can happen, and the fix. Newest first.

Engine and Engine Cooling · NHTSA 26V087000
Feb 14, 2026Engine and Engine Cooling:Cooling System:Hoses/Lines/Piping/Fittings
Problem
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.
Risk
Contact with hot heating coolant may burn occupants, increasing the risk of injury.
Fix
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.
Full recall details for 26V087000 →
Engine and Engine Cooling · NHTSA 26V086000
Feb 14, 2026Engine and Engine Cooling:Cooling System:Hoses/Lines/Piping/Fittings
Problem
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.
Risk
Contact with hot heating coolant may burn occupants, increasing the risk of injury.
Fix
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.
Full recall details for 26V086000 →
Structure · NHTSA 22V762000
Dec 10, 2022Structure:Body:Roof and Pillars
Problem
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.
Fix
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.
Full recall details for 22V762000 →
Seats · NHTSA 22V510000
Jul 19, 2022Seats
Problem
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.
Risk
Cracked passenger seat frames may not adequately secure passengers in the event of a crash, increasing the risk of injury.
Fix
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.
Full recall details for 22V510000 →
Electrical System · NHTSA 22V271000
Apr 22, 2022Electrical System:12v/24v/48v Battery:Cables
Problem
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.
Fix
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.
Full recall details for 22V271000 →
Electrical System · NHTSA 22V272000
Apr 22, 2022Electrical System:12v/24v/48v Battery:Cables
Problem
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.
Fix
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.
Full recall details for 22V272000 →

2023 Thomas Built Buses SAF-T-Liner HDX complaints and service bulletins

Thomas Built Buses has issued at least 26 technical service bulletins (repair instructions to dealers) for this model year. Complaints are unverified owner reports; a recall is the manufacturer’s admission of a safety defect.

Service bulletins by component

Engine (12)
Unknown Or Other (4)
Exterior Lighting (2)
Seats (2)
Visibility/Wiper (2)
Wheels (2)

Read Thomas Built Buses SAF-T-Liner HDX owner complaints and bulletins, every year

Check your SAF-T-Liner HDX by VIN

Not every 2023 Thomas Built Buses SAF-T-Liner HDX is in every recall. Enter your 17-character VIN to see the recalls on record for your exact vehicle, then confirm which are still open at NHTSA.gov or with any Thomas Built Buses dealer.

Run a free VIN recall check →

Other Thomas Built Buses SAF-T-Liner HDX model years

← 2022 Thomas Built Buses SAF-T-Liner HDX · 2024 Thomas Built Buses SAF-T-Liner HDX →

All Thomas Built Buses SAF-T-Liner HDX recalls, every model year

2023 Thomas Built Buses SAF-T-Liner HDX recalls (6)

6 NHTSA safety recalls cover the 2023 Thomas Built Buses SAF-T-Liner HDX. Every recall repair is free at any Thomas Built Buses dealer.

6recalls

0owner complaints

26+service bulletins

0do-not-drive / park-outside

Is yours affected? Recalls cover ranges of VINs, not every 2023 Thomas Built Buses SAF-T-Liner HDX. Check your SAF-T-Liner HDX by VIN and confirm open recalls at NHTSA.gov.

Every 2023 Thomas Built Buses SAF-T-Liner HDX recall

Each campaign as NHTSA published it: what is wrong, what can happen, and the fix. Newest first.

Engine and Engine Cooling · NHTSA 26V087000

Feb 14, 2026Engine and Engine Cooling:Cooling System:Hoses/Lines/Piping/Fittings

Problem: 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.
Risk: Contact with hot heating coolant may burn occupants, increasing the risk of injury.
Fix: 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.

Full recall details for 26V087000 →

Engine and Engine Cooling · NHTSA 26V086000

Feb 14, 2026Engine and Engine Cooling:Cooling System:Hoses/Lines/Piping/Fittings

Problem: 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.
Risk: Contact with hot heating coolant may burn occupants, increasing the risk of injury.
Fix: 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.

Full recall details for 26V086000 →

Structure · NHTSA 22V762000

Dec 10, 2022Structure:Body:Roof and Pillars

Problem: 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.
Fix: 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.

Full recall details for 22V762000 →

Seats · NHTSA 22V510000

Jul 19, 2022Seats

Problem: 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.
Risk: Cracked passenger seat frames may not adequately secure passengers in the event of a crash, increasing the risk of injury.
Fix: 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.

Full recall details for 22V510000 →

Electrical System · NHTSA 22V271000

Apr 22, 2022Electrical System:12v/24v/48v Battery:Cables

Problem: 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.
Fix: 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.

Full recall details for 22V271000 →

Electrical System · NHTSA 22V272000

Apr 22, 2022Electrical System:12v/24v/48v Battery:Cables

Problem: 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.
Fix: 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.

Full recall details for 22V272000 →

2023 Thomas Built Buses SAF-T-Liner HDX complaints and service bulletins

Service bulletins by component

Engine (12)

Unknown Or Other (4)

Exterior Lighting (2)

Seats (2)

Visibility/Wiper (2)

Wheels (2)