Interesting, did the garage say anything in particular when they were doing it or did they find any issues with your high miles? My F15 has done 115k miles in 3 years so I was wondering what I should look out for now?

It's definitely in there, about 2 or 3 from the bottom on the list of options. The list is shown on the left hand side of the screen, small square icons. Let me know if you still can't find it and I'll do a video for you