2011–2021 Thomas Built Buses Saf-T-Liner Hdx Seats Recall 22V634000 (Thomas Built Buses FL843)
NHTSA recall 22V634000 (Thomas Built Buses recall FL843) covers about 7,561 2011–2021 Thomas Built Buses Saf-T-Liner Hdx vehicles (seats), filed with NHTSA Aug 19, 2022. There is no do-not-drive or park-outside advisory.
Source: NHTSA campaign 22V634000 · Data as of Nov 6, 2026 · By CarWhere Research
What's recalled
Component: Seats (barriers)
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."
The risk
Occupants may collide with the front seat barriers with more force than intended during a crash, increasing the risk of injury.
The remedy and its status
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.
Status: NHTSA lists Aug 25, 2023 as the owner-notification date for this campaign.
Thomas Built Buses recall number FL843
NHTSA lists the manufacturer's own recall number for 22V634000 as FL843. Owner letters and dealer service departments often use this code, so a search for "FL843 recall" refers to the same campaign.
Affected models and years
Models and model years NHTSA lists for this campaign. Not every vehicle of a listed model and year is included; check by VIN.
| Vehicle | Model years | More |
|---|---|---|
| Thomas Built Buses Saf-T-Liner Hdx | 2011–2021 | — |
Key dates
- Report filed with NHTSA
- Aug 19, 2022
- Owner notification
- Aug 25, 2023
- Recall initiated by
- the manufacturer
- Filed by
- Daimler Trucks North America, LLC
- Safety standard (FMVSS)
- 222
Check your VIN for 22V634000
- Find the 17-character VIN on the driver-side dashboard (visible through the windshield), the door-jamb sticker, or your registration.
- Enter it in NHTSA's free VIN recall lookup. It shows every open recall on that exact vehicle, including this one if it applies and hasn't been repaired.
- If 22V634000 is open, call any Thomas Built Buses dealer's service department and give them the recall number (22V634000 or FL843). The repair is free.
Not sure of the exact model or year? Decode it first with the free VIN decoder.
Frequently asked questions
What is recall 22V634000?
NHTSA recall 22V634000 (Thomas Built Buses recall FL843) covers about 7,561 2011–2021 Thomas Built Buses Saf-T-Liner Hdx vehicles (seats), filed with NHTSA Aug 19, 2022. There is no do-not-drive or park-outside advisory. It covers certain 2011-2021 Thomas Built Saf-T Liner HDX school buses.
Is it safe to drive a vehicle with recall 22V634000?
NHTSA's record for 22V634000 carries no do-not-drive or park-outside advisory. The risk NHTSA lists is: "Occupants may collide with the front seat barriers with more force than intended during a crash, increasing the risk of injury." Get the free repair as soon as it is available for your vehicle.
How do I know if my vehicle is affected by 22V634000?
Only a VIN lookup can tell you. Not every vehicle of the listed models and years is included, and repaired vehicles drop off. Enter your 17-character VIN in NHTSA's free recall lookup at nhtsa.gov/recalls, or ask any Thomas Built Buses dealer to check it.
What is the fix for recall 22V634000, and is it free?
NHTSA's record says: "Dealers will install a spacer between the seat rail and the seat barrier, free of charge." NHTSA lists Aug 25, 2023 as the owner-notification date for this campaign. Safety-recall repairs are done free of charge at authorized dealers.
What is the Thomas Built Buses recall number for 22V634000?
NHTSA lists the manufacturer's own recall number as FL843. Dealers and owner letters often use that code (FL843) instead of the NHTSA campaign number 22V634000.
Sources and method
- NHTSA recall record for 22V634000, from NHTSA's public recall campaign database. Problem, risk and remedy text is NHTSA's own wording.
- "Vehicles affected" is NHTSA's potential-units-affected count for the whole campaign.
- Data as of Nov 6, 2026. NHTSA updates campaigns as manufacturers file amendments, so check the official record for the latest.