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 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