See also:

Activating audio CD/DVD or MP3 mode
Option 1 Insert a CD/DVD or an SD card or connect a USB device. COMAND loads the medium inserted and starts to play it. Option 2 Press the function button once or twice. Select an aud ...

Problems with PARKTRONIC
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Restoring the factory settings
Press the and buttons simultaneously for approximately six seconds until the battery check lamp flashes twice. ...