The buttons in the central control area of Mercedes-Benz S450 are introduced from top to bottom on the panel on the right side of the seat. The first button is the physical buttons of seat adjustment, navigation, radio, double flash, media phone and body control system. Starting from the leftmost vertical button, it is introduced as follows: automatic start-stop switch, driving mode adjustment, chassis lifting and reversing image calling; The rightmost row of vertical buttons are introduced in turn: the switch of the central control screen, the volume adjustment, the mute effect when pressed, the lifting button of the rear headrest, and the switch of the reversing radar; The middle area is the control area of Kaman system, and the screen can be controlled by sliding left, right and up. Above and below are the back key, song cutting key and main menu key.