Vehicle recall 13V633000 · December 16, 2013
Thomas Built Buses SAF-T-Liner C2 and Thomas Built SAF-T-Liner C2
The software controlling the affected transmissions may improperly raise the vehicle's engine speed during downshifts without the driver's input.
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- Daimler Trucks North America (DTNA) is recalling certain model year 2011-2013 Thomas Built Saf-T-Liner C2 school buses manufactured December 3, 2009, through February 8, 2012, and equipped with Eaton hybrid automated transmissions. The software controlling the affected transmissions may improperly raise the vehicle's engine speed during downshifts without the driver's input.
- Consequence
- The increase in engine speed may result in unintended acceleration, increasing the risk of a crash.
- Remedy
- DTNA will notify owners and dealers will update the hybrid transmission software, free of charge. The recall began on February 5, 2014. Owners may contact DTNA at 1-503-745-6910. DTNA's recall number is FL-657.
- 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.safercar.gov.
Recall details
- NHTSA campaign
- 13V633000
- Reported to NHTSA
- December 16, 2013
- Filed by
- Daimler Trucks North America
- Manufacturer campaign
- FL-657
- Owner notification
- February 5, 2014
- Vehicles potentially affected
- 29
- Initiated by
- the manufacturer
- Components
- Power train › Automatic transmission
Vehicles covered
As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.
- Thomas Built SAF-T-Liner C2 (2011): 2011
- Thomas Built Buses SAF-T-Liner C2 (2012-2013): 2013, 2012
Has your Thomas Built been repaired?
Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.
NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Thomas Built dealer can also check your VIN. Recall repairs are free.