Ford C-Max 2013–2014 — technical service bulletin
Bulletin ASI-44339 · NHTSA communication 10054810 · issued Dec 1, 2013
Technical service bulletin
communication type
Engine
component
2013–2014
model years
11
vehicle entries
Official summary
Ford/lincoln: the wrench lamp (hybrids) or service engine soon lamp (energi) will illuminate when using engine block heater and lamps turn off within no more than three drive cycles after unplugging engine block heater. Model 2013-2014 c-max, fusion, mkz hybrid/energi. *pe
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.