I took delivery of mine last November, and I have had the paddles replaced twice. Most recently was in September.
Both times the dealer had to take the car in for an hour, did some tests, and ordered the parts. Installation took only a couple of hours each time, but your whole console needs to be removed. Prepare to re-set your radio settings.
I can't remember what the diagnosis was, but the paddles are quite flimsy, and the connections could break if you like "flipping" the paddles. Mine were broken when trying to downshift from 3 to 2...and got stuck on reading "3".
The first time I never got to see any numbers on the display. Always "D".
The second time I was able to get the display to show anything from 1 to 6, by shifting the gearshift to +/-. And it stuck in that particular gear.
I think the second replacement paddles were a bit more sturdy, but just remember, do not flip your paddles. Give them a solid pull and they should last for a while.
Good luck guys!