See also:

Automatic interior lighting control
To switch on/off: press the | button. When the automatic interior lighting control is activated, the button is flush with the overhead control panel. The interior lighting automatically switches on ...

Mercedes-Benz M-Class Owners Manual
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Important safety notes
In the following section, the term "sliding sunroof" refers to the panorama roof with power tilt/sliding panel. WARNING When opening or closing the sliding sunroof, make sure that t ...