I have had all the same problems with my 2007 x5 3.0! 9k miles on it. This is just a bad bmw! I have had others and they were great! oh well.
1) I drive failure!
2) ventilation fans go out once in a while, i hit a bump and it kicks back on.
3) high battery drain warning, sporatic
4) headlights are out and rear tail lights out! dealer said this is from not driving the car enough and the battery does not get charged! you got to be kidding me!
5) sirius radio goes out once in a while!
6) sporatic electronic issues that just happen once and never come back again, very strange!