See also:

Connecting an external device
Do not leave external devices in the vehicle as extreme temperatures (e.g. direct sunlight or extremely low outside temperatures) could cause them to malfunction (see the operating instructions ...

Manual interior lighting control
To switch the front interior lighting on/ off: press the button. To switch the rear interior lighting on/ off: press the button. To switch the reading lamps on/off: press the button. ...

The Inside
Mercedes has been reshaping its lineup for the past few years, and the interiors of models like the C-Class and new E-Class have taken on a more angular appearance. That's true in the new GLK350, ...