See also:

Making adjustments in 5 mph (Canada:

10 km/h) increments
Briefly press the cruise control lever beyond the pressure point, up 1 for a higher speed or down 2 for a lower speed. The last speed stored is increased or reduced. ...

Calling up a stored parking position setting
•► Turn the SmartKey to position 2 in the ignition lock.•► Adjust the exterior mirror on the frontpassenger side with the corresponding button•► Engage reverse gear. The exter ...

Cleaning the steering wheel and gear or selector lever
  Thoroughly wipe with a damp cloth or use leather care agents that have been recommended and approved by Mercedes- Benz. ...