OK, brand new member here with similar issue. Mine has a weird twist to it, though. Got our vehicle in late June, 2018. We are 9800 miles, currently and the car has exceeded almost all of our expectations. Yesterday, took it into Sarasota Ford for its first oil change, which we were notified by the vehicle itself that it needed to have. They gave me the complimentary car wash afterwards and I was on my way.
Last night, we went out to dinner and experienced the same satellite acquiring signal message as all the others. Having had satellite in my vehicles since 2003, I know what is "normal" and what is not; this was definitely NOT a normal situation for when signal would have been lost. I thought maybe the antenna had been messed up during the car wash so after arriving at the restaurant, I checked and sure enough, it was bent about 30 degrees from normal. I immediately called the dealer and he had me come in today and get a new one. (The satellite DID work as usual on the drive to the dealer, today.) He was not convinced that this new antenna was going to "fix" the issue, but he was replacing it simply because the other one was bent. (After reading this thread, I am strongly thinking that he was aware of the "acquiring signal" problem that others are having. It is a VERY large dealer and I'm sure that someone has been down this road with him before.) He simply screwed on the new antenna and we were on our way. FWIW, the "new" antenna is a very flexible, all rubber tube, not the twisted metal previously used. He said there had been quite a few of these damaged by car washes, so he was guessing Ford changed the style for that reason.
Either way, I will stay in touch with this thread with any changes or recurrences.
timmy