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2023 THOMAS BUILT BUSES SAF-T-LINER HDX

8 recalls — 0 complaints — 7 TSBs

26V086000 Feb 13, 2026
ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS
Defect Description
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.
2,843 vehicles affected
Manufacturer: Daimler Trucks North America, LLC
26V087000 Feb 13, 2026
ENGINE AND ENGINE COOLING:COOLING SYSTEM:HOSES/LINES/PIPING/FITTINGS
Defect Description
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.
52 vehicles affected
Manufacturer: Daimler Trucks North America, LLC
22V762000 Oct 12, 2022
STRUCTURE:BODY:ROOF AND PILLARS
Defect Description
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... Read more
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.
17,613 vehicles affected
Manufacturer: Daimler Trucks North America, LLC
22V688000 Sep 14, 2022
STRUCTURE:BODY
Defect Description
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 Standa... Read more
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.
1,259 vehicles affected
Manufacturer: Daimler Trucks North America, LLC
22V553000 Jul 29, 2022
ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM)
Defect Description
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.
71 vehicles affected
Manufacturer: Daimler Trucks North America, LLC
22V510000 Jul 19, 2022
SEATS
Defect Description
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.
1,806 vehicles affected
Manufacturer: Daimler Trucks North America, LLC
22V271000 Apr 22, 2022
ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES
Defect Description
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.
2,943 vehicles affected
Manufacturer: Daimler Trucks North America, LLC
22V272000 Apr 22, 2022
ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES
Defect Description
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.
138 vehicles affected
Manufacturer: Daimler Trucks North America, LLC

No complaints found for this vehicle.

Technical Service Bulletins — 2023 THOMAS BUILT BUSES SAF-T-LINER HDX

7 manufacturer communications from 7 unique bulletins. TSBs describe known problems and recommended fixes from the manufacturer.

Most Affected Components

ComponentBulletins
200000 WHEELS2
220000 SEATS2
980000 UNKNOWN OR OTHER1
180000 VEHICLE SPEED CONTROL1
120000 EXTERIOR LIGHTING1
PAB003-2023 Jan 24, 2023
220000 SEATS
Product Awareness Bulletin for SUSPENSION OF FREEDMAN SEATS TYPES C & D. Effective 1/27/2023, we are suspending Freedman Seat options for our Saf T Liner C2, eC2, HDX and EFX vehicles. Structural body changes now planned for 1/1/2024 implem
PAB004-2023 Jan 24, 2023
220000 SEATS
Product Awareness Bulletin for IMMI SABRE SafeGuard Belt Ready (SBR) SEATS. Beginning January 30, 2023 IMMI' s new Sabre seats will be available to select in RACE for use on all new orders for TBB products. The new SafeGuard Belt Ready (SBR
PAB054-2022 Sep 22, 2022
120000 EXTERIOR LIGHTING
Product Awareness Bulletin for WELDON LAMP SHORTAGE a??CONTAINMENT. Wea??ve been notified by Weldon that they are no longer able to provide LED lamp 162362. This light is across all product lines and this shortage will impact our production
PAB041-2022 Jun 30, 2022
200000 WHEELS
Product Awareness Bulletin for Bridgestone Tires Discontinuation. As TBB continues to work through supply shortages that threaten delivery of vehicles, we will need to discontinue Bridgestonetires until further notice.
PAB011-2022 Jun 3, 2022
180000 VEHICLE SPEED CONTROL
Product Awareness Bulletin for HDX Adjustable Pedals Temporarily Discontinued
PAB021-2022 Apr 6, 2022
980000 UNKNOWN OR OTHER
Product Awareness Bulletin for QR Code Label for Express Write Up App. A QR Code label will become standard equipment on all units. This means you will no longer have to manually enter the VIN in the Express Write Up app! Labels will be add
PAB017-2022 Mar 25, 2022
200000 WHEELS
Product Awareness Bulletin for SUSPENSION OF BF GOODRICH TIRE OPTIONS

NHTSA Safety Investigations — THOMAS BUILT BUSES SAF-T-LINER HDX

Investigations opened by NHTSA into potential safety defects. These are separate from recalls and may or may not result in a recall.

PE11029 Opened: Sep 2, 2011 — Closed: Feb 17, 2012
PE — Closed — Model Year: 2003
Thomas Built CNG Tank Abrasion
On August 29, 2011 ODI received a Vehicle Owner's Questionnaire (VOQ) from a Los Angeles school district indicating a 2003 Thomas Built Saf-T-Liner HDX compressed natural gas (CNG) school bus in their fleet had insufficient clearance between the CNG tank and mounting bracket resulting in damage to t... Read more

THOMAS BUILT BUSES SAF-T-LINER HDX — All Years Overview

Complete safety history for the THOMAS BUILT BUSES SAF-T-LINER HDX across all model years (2002–2026).

374 Total Recalls
10 Total Complaints
1 Investigations
0 Reported Crashes
2 Reported Fires
0 Reported Deaths

THOMAS BUILT BUSES SAF-T-LINER HDX — Year by Year

Compare recalls and complaints across model years. Click any year to see full details.

Year Recalls Complaints
2026 3 0 View
2025 3 0 View
2024 2 0 View
2023 (current) 8 0
2022 11 0 View
2021 16 0 View
2020 18 0 View
2019 21 2 View
2018 26 0 View
2017 32 0 View
2016 29 0 View
2015 31 0 View
2014 30 0 View
2013 23 0 View
2012 19 0 View
2011 23 0 View
2010 16 0 View
2009 14 2 View
2008 14 0 View
2007 10 0 View
2006 9 2 View
2005 5 0 View
2004 5 4 View
2003 5 0 View
2002 1 0 View

Other THOMAS BUILT BUSES Models

Model Recalls Complaints
C2 0 0 View
CL-960 0 0 View
CONVENTIONAL 0 0 View
EF 0 0 View
ER 0 0 View
FS-65 0 0 View
FS65 0 0 View
HDX 0 0 View