Well, I sincerely hope that you have more luck with your dealers than mine. Someone at the dealers put a scuff in the paintwork on the N/S/F wing last September whilst it was it for sat-nav issues. That still hasn't been fixed. And now they want to charge me nearly £350 to fit a new wing mirror that won't fold and won't stay in place saying that it's been hit (it hasn't), even after I pointed out that it's probably only two gear wheels out of mesh. According to them, you have to replace the whole assembly including the glass, because the glass always breaks when you take it apart!
BTW, mine doesn't have the lane departure system fitted. Apparently mirrors for those are mega-bucks...