i have it on the e53 and the e60. Works well on both, but you gotta know what to tell the system. You can't just say what you want. We made some reduced cut sheets and put them in each vehicle. Now we hardly us the cut sheets unless we are not certain about which command to use.

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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…….