See also:

Symbols and messages in the display
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FAV—storing a shortcut
The FAV button can be used to store frequently used functions, making it possible to start the stored function by simply pressing FAV. One favorite (for example, Equalizer) can be programmed ...

Limitations
Strong sunlight, reflections, extreme light contrasts, the use of sunglasses, or if the driver is not looking straight ahead may make the visual warning signal in the windshield difficult to see. ...