See also:

Cleaning instructions
Do not touch the COMAND display. The display has a very sensitive high-gloss surface; there is a risk of scratching. If you have to clean the screen, however, use a mild cleaning agent and a ...

Problems with PARKTRONIC
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Setting the center air vents
1 Center air vent, left 2 Center air vent, right 3 Center vent thumbwheel, right 4 Center vent thumbwheel, left - To open/close: turn thumbwheels 3 and 4 to the right or left. ...