Important safety notes

Only use carriers when the basic carrier bars WARNING
Only use carriers when the basic carrier bars have been completely mounted. The left and right roof rails are only stabilized by means of the basic carrier bars mounted.
Follow the manufacturer's installation instructions. Otherwise, an improperly attached carrier or its load could become detached from the vehicle.
Do not exceed the maximum roof load of 220 lb (100 kg).
Take into consideration that when the roof is loaded, the handling characteristics are different from those when operating the vehicle without the roof loaded.

Mercedes-Benz recommends that you Mercedes-Benz recommends that you only use roof carriers that have been tested and approved for Mercedes-Benz vehicles.

This helps to prevent damage to the vehicle.

Position the load on the roof carrier in such a way that the vehicle will not sustain damage even when it is in motion.

Depending on the vehicle equipment, ensure that when the roof carrier is installed you can:
- raise the sliding sunroof fully
- open the panorama roof with power tilt/sliding panel fully
- open the tailgate fully

    See also:

    Increased vehicle weight due to optional equipment
    This is the combined weight of all standard and optional equipment available for the vehicle, regardless of whether it is actually installed on the vehicle or not. ...

    De-registering (de-authorizing) a mobile phone
    Mercedes-Benz USA, LLC recommends deauthorizating in both COMAND and the mobile phone. Subsequent authorization may otherwise fail. To call up the telephone menu: press the function button ...

    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. ...