See also:

Making adjustments in 1 mph (Canada: 1 km/h) increments
•► Briefly press the cruise control lever to the pressure point, up 1 for a higher speed or down 2 for a lower speed. The last speed stored is increased or reduced. ...

Roof carrier
Important safety notes WARNING   Only use carriers when the crossbars have been completely mounted. The left and right roof rails are only stabilized by means of the crossbars mounted. ...

Notes on technical data
The data stated here specifically refers to a vehicle with standard equipment. Consult an authorized Mercedes-Benz Center for the data for all vehicle variants and trim levels. ...