Ford F-150 2015–2017 — technical service bulletin
Bulletin SSM 46150 · NHTSA communication 10090988 · issued Oct 26, 2016
Technical service bulletin
communication type
Equipment
component
2015–2017
model years
3
vehicle entries
Official summary
Some 2015-2017 f-150 vehicles may exhibit poor heater performance caused by restricted heater cores. Extensive use of the block heater may increase cooling system deposits which contribute to heater core restrictions. It is recommended to plug in the block heater for 1 2 hours before starting engine when ambient temperatures are -15 degrees c (0 degrees f) or lower.
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.