The half-moon switch and II switches are to do with the cruise control; the half-moon is (I think, on/off), the II is to 'pause/resume (I think) and there is also a push button on end of the LH stalk for increasing speed (again, I think). The 3 posn rocker switch is for setting the auto gearbox to Sport, Normal or 1 (low gear - eg snow/ice).