Replaced the rear pads on the X260, probably the easiest brake pads I have ever done, a dream of a job.
Same caliper as mine? Mine was a breeze once I'd rstocked my tools with the right size allen socket, ignoring the fact the seal was slpit and had to be replaced. They did wind in awfully easily.
No wind in required!
Ignition on, press down on handbrake release button for 2 seconds, then also floor the throttle for 2 seconds, then ignition off and on again and the caliper motors wind in to maintenance position.
Then pop the sliders out, press the piston back (in my case with bleed nipple open as I don't take risks), insert new pads following a clean up, re-assemble and then clip the wear sensor back (this is a great design!).
Repeat the trick for setting the caliper motors but with the release button in the up position and away you go.
Its also very noticeable how good the Jag pads are, very high ceramic content so minimal disc wear and virtually no dust (clean alloys!)