I am sorry to hear about your X5 issues. I have a 2005 3.0i. I know that your is a D, but the items that you just mensioned should be the same on both vehicle. I guest I am one of the lucky one because I haven't had any issues with mine except the secondary air valve sticking.

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2010 X6 50i
2005 X5 3.Oi, Many Options
2015 HONDA CR-V EX-L
1998 ACURA 2.5TL

MODs
- Driver's outside mirror light
- Voice Recognition Module
- Blaupunkt Entertainment System
with Digital TV