Cruise Control Indicator
WARNING: This page is about a different car, the 2017 Ford F-550 Super Duty, 2017 Ford F-450 Super Duty, 2017 Ford F-350 Super Duty, and 2017 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
The cruise control indicator, located in the IPC, illuminates to indicate the cruise control system is active.