Electric Booster Heater
WARNING: This page is about a different car, the 2018 Ford F-550 Super Duty, 2018 Ford F-450 Super Duty, 2018 Ford F-350 Super Duty, and 2018 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
For system operation and component description information on the electric booster heater, Refer to: Supplemental Climate Control - System Operation and Component Description .