No complaints are listed for the 2018 Thomas Built Buses SAF-T-Liner HDX. NHTSA's API and bulk file list none in this build.
Data build 2026-10-09.
NHTSA lists this vehicle as THOMAS BUILT BUSES SAF-T-LINER HDX.
Model-generated complaint tags: No complaints are listed for tagging.
Recalls
See new recalls and investigations this week.
26 recalls. Showing the latest 10 of 26.
Date: 2022-10-12. Systems: STRUCTURE.
Defect: 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.
Do not drive: No. Park outside: No.
Date: 2022-08-19. Systems: SEATS.
Defect: 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."
Consequence: Occupants may collide with the front seat barriers with more force than intended during a crash, increasing the risk of injury.
Remedy: Dealers will install a spacer between the seat rail and the seat barrier, free of charge. Owner notification letters were mailed August 25, 2023. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL843. This recall replaces NHTSA recall 19V899.
Do not drive: No. Park outside: No.
Date: 2022-07-19. Systems: SEATS.
Defect: 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.
Do not drive: No. Park outside: No.
Date: 2021-08-25. Systems: STEERING.
Defect: 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.
Consequence: A damaged power steering hose can leak, and increase the risk of a fire.
Remedy: DTNA will inspect the power steering hose routing and modify it as necessary, free of charge. Owner notification letters are expected to be mailed on October 17, 2021. Owners may contact DTNA's customer service at 1-800-547-0712. DTNA's number for this recall is FL898.
Do not drive: No. Park outside: No.
Date: 2021-08-25. Systems: STEERING.
Defect: 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.
Consequence: A worn power steering hose increases the risk of a fire.
Remedy: DTNA will inspect the power steering hose routing and modify it as necessary, free of charge. Owner notification letters are expected to be mailed on October 17, 2021. Owners may contact DTNA's customer service at 1-800-547-0712. DTNA's number for this recall is FL898.
Do not drive: No. Park outside: No.
Date: 2021-06-17. Systems: SEATS.
Defect: 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 (excerpt)
Consequence: In the event of a crash, the seats may not adequately protect the occupants, increasing the risk of injury. (excerpt)
Remedy: Dealers will replace the rear passenger seats, free of charge. No owner notification will be distributed, all units were repaired on August 12, 2021. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-892. (excerpt)
Do not drive: No. Park outside: No.
Date: 2021-05-07. Systems: FUEL SYSTEM, DIESEL.
Defect: 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.
Consequence: A fuel leak in the presence of an ignition source increases the risk of a fire.
Remedy: Dealers will replace the fuel rail and fuel lines, free of charge. Interim owner notification letters were mailed on June 21, 2021. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-886.
Do not drive: No. Park outside: No.
Date: 2020-05-05. Systems: EQUIPMENT, STRUCTURE.
Defect: 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."
Consequence: Small lettering may be difficult for occupants to read, delaying the reaction time to open the exit, increasing the risk of injury.
Remedy: DTNA will notify owners and mail a new label to attach to the exit window by first class mail, free of charge. DTNA issued owners an interim notification on June 17, 2020. The recall began September 10, 2020. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-849.
Do not drive: No. Park outside: No.
Date: 2019-11-19. Systems: POWER TRAIN.
Defect: 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.
Consequence: 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.
Remedy: DTNA will notify owners, and dealers will inspect and tighten the fasteners, as necessary, free of charge. DTNA issued owners an interim notification on December 13, 2019. The recall began August 7, 2020. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-839.
Do not drive: No. Park outside: No.
Date: 2019-10-04. Systems: SEATS.
Defect: Daimler Trucks North America LLC (DTNA) is recalling certain 2014-2020 Thomas Built Saf-T-Liner EFX, Minotour, Saf-T-Liner C2, and Saf-T-Liner HDX school buses equipped with SynTec S3B or S3C seats. The seats may have been manufactured with styrene blocks that may not provide sufficient impact absorption in certain specific areas around the steel seat frame of the back support. As such, these v (excerpt)
Consequence: The lack of impact absorption increases the risk of injury in the event of a crash. (excerpt)
Remedy: DTNA will notify owners, and dealers will install additional impact material between the re-bond back and the vinyl back cover to increase the amount of absorption, free of charge. DTNA issued owners an interim notification on November 29, 2019. The recall began June 22, 2020. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-832. (excerpt)
Do not drive: No. Park outside: No.
Manufacturer communications
165 manufacturer communications.
Communications by system| System | Count |
|---|
| EQUIPMENT | 92 |
|---|
| ENGINE AND ENGINE COOLING | 18 |
|---|
| ENGINE | 14 |
|---|
| ELECTRICAL SYSTEM | 12 |
|---|
| SEATS | 11 |
|---|
| FUEL SYSTEM, GASOLINE | 8 |
|---|
| FUEL SYSTEM, OTHER | 6 |
|---|
| STEERING | 6 |
|---|
11031984
Date: 2026-04-23. Type: Other. Systems: ENGINE.
Service Solution for HDX DEF Header Service Replacement Additional Parts
11022321
Date: 2025-08-07. Type: Other. Systems: ENGINE.
Service Solution for HDX DEF Header Service Replacement Additional Parts
11013214
Date: 2025-01-07. Type: Other. Systems: VISIBILITY/WIPER.
Service Solution for Wiper Module TBB 61201552 replacement
11011076
Date: 2024-11-11. Type: Warranty Program/Extension. Systems: ENGINE.
Warranty Information letter for Detroit Line or Line Seal, High Pressure Fuel Injector Standard Repair Time Updates
11010192
Date: 2024-10-21. Type: Other. Systems: ENGINE.
Extended Warranty Policy for certain Cummins B6.7 engines for TBB vehicle DEF headers for EPA and CARB Emissions Reporting
11010186
Date: 2024-10-17. Type: Other. Systems: ENGINE.
CX Advocate for CARB tightening the Readiness Criteria applied to On-Board Diagnostic (OBD) test submissions for the Clean Truck Check.
11010150
Date: 2024-10-03. Type: Other. Systems: VISIBILITY/WIPER.
Service Solution for Wiper Module TBB 61201552 replacement
11008508
Date: 2024-09-16. Type: Other. Systems: ENGINE.
Service Solution for Detroit Successful Regen Reference for GHG17 DD Engines
10251200
Date: 2024-02-20. Type: Service Bulletin/Repair Instructions. Systems: ENGINE AND ENGINE COOLING.
Revised Emissions Recall: Cummins DEF Sensor Shortage. REVISION: Some vehicles formerly in Group F have been moved to Group G and have been assigned a new part number as specified in Table 1. An SRT for 'Calibration Code Only: Update or Confirm' has been added, as shown in Table 2, to be used when a
10251202
Date: 2024-02-20. Type: Service Bulletin/Repair Instructions. Systems: ENGINE AND ENGINE COOLING.
Important Campaign Information letter for FL974 - Revised Bulletin & Population