Battery Saver
WARNING: This page is about a different car, the 2019 Ford Police Interceptor Utility and 2019 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
The battery saver feature is used to conserve battery voltage. The BCM provides automatic shut-off of the interior lamps after a time-out period when the ignition is off.
Refer to: Interior Lighting - System Operation and Component Description .