See also:

Setting the B-pillar air vents
1 B-pillar air vent 2 Thumbwheel for B-pillar air vent To open/close: turn thumbwheel 2 to the left or right. ...

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. ...

Important notes
In order to prevent the vehicle's battery from discharging, the interior lighting functions are automatically deactivated after some time except for when the SmartKey is in position 2 in the i ...