New 2008 X5 owner

[JCDillon]

Hello Xoutpost! I am the recent owner of a 2008 X5 4.8. Not completely new to Bimmers, I also have an 1989 635 CSi, Black on Black 5 speed.
Love the X5 so far, great power, nothing like the V8 burble! I've read about the crazy maintenance costs of some of these and I am hopeful that with good maintenance (previous owners kept great records) I can avoid some of the high cost while expecting to maintain the vehicle as well, if not better, than was previously done.
Anyway, In the month I've had the SAV, I've not experienced anything horrible. I did have to replace one coil pack(dealer did it at their cost) but so far, all is well. Will do all 8 very soon along with new plugs. Any recommendations?
A few niggling issues such as a non-working rain sensor for the wipers. Its weird. When I activate the button on the stalk, they wipe once, but the rain doesn't do anything to move them along. Green LED comes on, but they don't wipe when it rains.
Another is the front ciggy socket doesn't work. Checked all the fuses in the rear (111, 113, 115, 118) and all checked out OK. Any ideas?

Well, apologies for the longish first post! I hope to find great advice and camaraderie on here.
I'll post up picks as soon as I wash it again.

Thanks in advance!

JC Dillon