TSB Document:

• Sorry, the NHTSA has not posted this TSB document yet.

You can still get the detailed info from Ford for this TSB. Call your local Ford dealer's service department & ask for a copy of TSB# SSM 46150.

Affected Component: EQUIPMENT

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.

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