I don't have your model X5 but this might help with some of your questions. Start with page 80 and scroll thru 81, 82, ect.
http://www.bmwmotorsports.org/pdf/BM...20-%202003.pdf

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"What you hear in a great jazz band is the sound of democracy. “The jazz band works best when participation is shaped by intelligent communication.”
Harmony happens whenever different parts get to form a whole by means of congruity, concord, symetry, consistency, conformity, correspondence, agreement, accord, unity, consonance…….