Ford Fusion: Auxiliary heater

Ford Fusion: Auxiliary heater - Climate control - Ford Fusion (2006-2012) Owners manualFord Fusion: Auxiliary heater

Diesel auxiliary heater(depending on country)

The diesel auxiliary heater (PTC electricalheater) aids in warming the engine andthe interior compartment on vehicles withdiesel engines. It is switched on or offautomatically depending on the outsidetemperature, the coolant temperatureand the alternator load.