Crankcase Ventilation Heater
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2018 Ford Transit-350 HD, 2018 Ford Transit-350, 2018 Ford Transit-250, 2018 Ford Transit-150, and 2018 Ford F-550 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
The crankcase ventilation heater is used to heat the crankcase ventilation system vapor to keep any oil that may be present from sludging in the charge air cooler, turbocharger and intake manifold. The crankcase ventilation heater is located on the crankcase ventilation hose. For additional information on the crankcase ventilation system, refer to CRANKCASE VENTILATION SYSTEM .