Thanks again to all who took the trouble to respond. To answer one question, yes we tried it with our other key fob. Same result. It‘s clear from your posts as well as my own experience that the dealer‘s techs are misinformed on this matter. I’ve been promised a call from someone on a higher level in Ford’s customer service food chain ( a “Customer Experience Specialist“, no less
). I’ll of course ask them to set the dealer straight and hopefully tell them how to fix, as it’s obvious the dealer‘s techs have a clue. Will post whatever the fix may be. Perhaps just rebooting the onboard computer, as worked for BlkStingray.