Thanks, I see your message.I'm disappointed that I have to revive this thread, but over the course of 6 months of attempting to mask this issue by shifting into a forward gear before reverse, it has continued to grind sporadically and I'm pretty miffed about it.
Anyone else have new info to report on this? I was just going again through posts from the past year on this and other Fiesta forums about gear whine, bad throwout bearings, etc. When I ride passenger with my wife driving, I do notice an almost "cricket"ish whine especially in fifth gear.
Meagan, thanks for your helpfulness. I've PM'd you my information again. I'd love to get in touch ASAP to find the closest dealership to me that has dealt with something like this previously, or which is willing to deal with this case. The head technician at my local dealership's service department in Northampton, MA was completely unwilling to watch the clip of it happening which I'd recorded -- it was clear he had zero interest in having to puzzle this one out while still under warranty. It's finally warm enough to ride my motorcycle around, so I'm happy to leave the Fiesta for an extended period at anywhere willing to help. Feel free to call anytime -- it's the start of Spring break from teaching this semester.
Let me know when you do, and I'll be happy to look into this.... and our '15 has 14k miles and it continues to get more difficult to get it into reverse using any technique. I will be taking it in first of summer when all the cars are back home.