See also:

Tire pressure specifications
WARNING Follow recommended tire inflation pressures. Do not underinflate tires. Underinflated tires wear excessively and/or unevenly, adversely affect handling and fuel economy, and are more ...

Activating/deactivating ATTENTION ASSIST
– Press the or button on the steering wheel to select the DriveAssist menu. – Press the or button to select Attention Asst.. – Press . The current selection is displayed. – To activate ...

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. ...