2013–2014 Thomas Built Buses Saf-T-Liner Efx Recall: DRL circuit breaker may trip during continuous operation of the headlights…
NHTSA campaign 13V022000 · Exterior Lighting · filed Jan 23, 2013 · verified Jul 30, 2026
The defect
Daimler Trucks North America (DTNA) is recalling certain model year 2013-2014 Thomas Built Buses brand Saf-T-Liner EFX school buses manufactured from March 29, 2012, through November 14, 2012 and equipped with 100% Daytime Running Lights (DRL) option code C3676-24-000. The DRL circuit breaker may trip during continuous operation of the headlights in high beam mode. This would result in a loss of power to the headlights, marker lights, tail lights, and dash lighting.
The risk
A loss of power to the bus' lights may reduce the driver's ability to see other vehicles, pedestrians, or objects, as well as reduce the bus' visibility to other drivers or pedestrians, increasing the risk of crash.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
DTNA has notified the affected owners. Dealers will replace the circuit breaker, free of charge. The recall began on December 14, 2012. Owners may contact Thomas Built Buses Warranty Department at 1-366-889-4871.
DTNA's recall campaign number is FL-638.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.
Affected vehicles
| Make | Model | Model years |
|---|---|---|
| Thomas Built Buses | Saf-T-Liner Efx | 2013, 2014 |
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Source: NHTSA recall database, campaign 13V022000 (manufacturer number FL-638). Data last verified Jul 30, 2026.