Did you ever get this resolved? My 2018 Ford Flex is doing the same thing! My dealership is convinced it is some of the speakers. Of course the speakers are no longer available from ford. That makes no sense to me because it plays music or whatever else just fine via bluetooth.
Did you end up having that Part "OJR3Z*14G371*J, with apparently is the central processor for navigation and mobile phones. Price: $997.98." Installed?
Did you end up having that Part "OJR3Z*14G371*J, with apparently is the central processor for navigation and mobile phones. Price: $997.98." Installed?