2012 Thomas Built Buses Saf-T-Liner C2 Recall: Exterior Lighting
NHTSA campaign 11V578000 · Exterior Lighting · filed Dec 5, 2011 · verified Jul 30, 2026
The defect
DAIMLER TRUCKS (DTNA) IS RECALLING CERTAIN MODEL YEAR 2012 THOMAS BUILT SAF-T-LINER SCHOOL BUSES MANUFACTURED FROM FEBRUARY 24, 2011, THROUGH AUGUST 3, 2011, EQUIPPED WITH BULK-HEAD MODULE SOFTWARE RELEASE 2.1 AND REFERENCE PARAMETER RELEASE P38407-06. INACCURATE FAULT DETECTION VALUES IN THE BULK-HEAD MODULE SOFTWARE MAY CAUSE THE SIDE MARKER/DIRECTIONAL LIGHTS TO STOP FUNCTIONING AFTER 5 TO 13 MINUTES OF VEHICLE OPERATION.
The risk
FAILURE OF THE SIDE MARKER/DIRECTIONAL LIGHTS TO ILLUMINATE WILL RESULT IN DECREASED VISIBILITY OF THE BUS AND/OR ITS INTENDED DIRECTION OF TRAVEL TO OTHER DRIVERS WHICH COULD INCREASE THE RISK OF A 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 WILL NOTIFY OWNERS, AND THE BULK-HEAD MODULE SOFTWARE WILL BE UPDATED BY DTNA AUTHORIZED SERVICE FACILITIES FREE OF CHARGE. THE SAFETY RECALL BEGAN ON FEBRUARY 2, 2012. OWNERS MAY CONTACT DTNA AT 1-800-547-0712.
DTNA'S RECALL CAMPAIGN NUMBER IS FL-620.OWNERS MAY ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S VEHICLE SAFETY HOTLINE AT 1-888-327-4236 (TTY 1-800-424-9153), OR GO TO <A HREF=HTTP://WWW.SAFERCAR.GOV>HTTP://WWW.SAFERCAR.GOV</A> .
Affected vehicles
| Make | Model | Model years |
|---|---|---|
| Thomas Built Buses | Saf-T-Liner C2 | 2012 |
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All Thomas Built Buses Saf-T-Liner C2 recalls → · All Thomas Built Buses recalls →
Source: NHTSA recall database, campaign 11V578000 (manufacturer number FL-620). Data last verified Jul 30, 2026.