Ford is recalling about 33,000 model year 2015-16 Ford F-150s with engine heater elements and 3.5-liter GTDI engines.
Depending on the heater element location, some vehicles may have cables with insufficient heat protection and incorrect length.
Prolonged exposure to high temperatures can cause a resistive short, inoperative engine block heater, and/or tripping of household breakers or GFCI-equipped outlets while the vehicle is parked and the block heater is plugged in.
The risk to safety exists only while the vehicle is parked and the block heater cable is plugged into an electrical outlet.
A resistive short in the engine-block heater splice connector can increase the risk of overheated or melted wiring and fire.
The automaker says it is unaware of any reports of fire, accident or injury.
What to do
Ford will contact owners, and dealers will inspect the block heater and cable and repair or replace as necessary free of charge.
Owners should not use the engine block heater cable until their vehicle is inspected.
Owners may contact Ford at (866) 436-7332. Ford's number for this recall is 20S08.