NHTSA campaign 23V621000 · Manufacturer campaign FL981
Thomas Built Buses Recall 23V-621: AC Electrical Connection May Overheat
NHTSA recall 23V621000 (Manufacturer campaign FL981) was reported by Daimler Trucks North America, LLC on September 6, 2023, with 679 vehicles potentially affected (per NHTSA). NHTSA's record lists the Thomas Built Buses SAF-T-Liner C2 for the 2024 model year. Owners were notified on October 19, 2023, per NHTSA.
Updated daily from NHTSA's recall files
Is my vehicle included?
This page lists, by model year, the vehicles NHTSA's recall record names for campaign 23V621000 in the model years try.vin imports (1995 and later); NHTSA's own record can list more. A model year on the list doesn't mean every vehicle of that year is included, and some may already have been repaired.
To see whether a specific vehicle is included and still needs the repair, enter its VIN at nhtsa.gov/recalls.
Free VIN check: decode a VIN to see its year, make and model.
Key facts
- NHTSA campaign
- 23V621000 (also written 23V-621 or 23V621)
- Filed by
- Daimler Trucks North America, LLC
- Manufacturer campaign number
- FL981
- Report received
- Potentially affected
- 679 vehicles (per NHTSA)
- Component
- Electrical System
- Owners notified
Repair completion: 97.94% (latest rate the manufacturer reported to NHTSA; dataset updated October 21, 2026)
NHTSA cautions against comparing completion rates across recalls or manufacturers. How try.vin reads them.
Vehicles listed for this recall
NHTSA's recall record lists these vehicles for recall 23V621000. try.vin imports model years 1995 and later, so NHTSA's own list can be longer. Model years with a try.vin recall page link to it. Build dates are NHTSA's range for a model year (per NHTSA); a vehicle built in that range is not necessarily included.
Thomas Built Buses
Thomas Built Buses SAF-T-Liner C2
NHTSA's recall notice
As NHTSA's recall record states it for campaign 23V621000.
Defect description
Daimler Trucks North America, LLC (DTNA) is recalling certain 2024 Thomas Built Buses SAF-T-Liner C2 school buses. The electrical cables for the air conditioning (AC) may not be installed properly, which can allow the electrical connection to overheat.
Safety consequence
An overheated electrical connection increases the risk of a fire.
Manufacturer remedy
Dealers will inspect and tighten the electrical cables, as necessary, free of charge. Owner notification letters were mailed October 19, 2023. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL981.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
Sources
Official NHTSA notice for recall 23V621000
Campaign details come from NHTSA's recall files, which try.vin imports once a day. The plain-language subject and the completion rate come from the U.S. Department of Transportation's Recalls Data dataset. How try.vin reads recall data.