Ford F-150 2015–2018 — technical service bulletin
Bulletin TSB 18-2250 · NHTSA communication 10144916 · issued Aug 21, 2018
Technical service bulletin
communication type
Equipment
component
2015–2018
model years
4
vehicle entries
Official summary
Some 2015-2018 F-150 vehicles equipped with a 3.3L/3.5L Duratec, 3.5L EcoBoost and 5.0L engine and equipped with a block heater may exhibit a lack of heat concern from the heating ventilation and air conditioning (HVAC) system when operating the vehicle consistently in temperatures that are below -20Å?C (4Å?F). This condition may be due to deposits from the engine coolant becoming trapped in the heater core. Follow the Service Procedure steps to correct the condition.
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.