Operating Touch Control (MBUX multimedia system)
button Shows the home screen and calls up applications
Calls up suggestions, themes and favourites: when the home screen is shown, swipe down on Touch Control 
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button Pressing briefly: returns to the previous display
You can navigate in menus and lists via the touch-sensitive surface of Touch Control by using a single-finger swipe.
To enter a character:
enter a character using the keyboard. To select a menu option:
scroll in a list and press Touch Control . To move the digital map:
swipe in any direction.