See also:

Rejecting or ending a call
– Press the button on the steering wheel. If you are not in the Tel menu, you can still reject or end a call. ...

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. ...

Limited braking performance on salttreated roads
WARNING The layer of salt on the brake discs and the brake pads/linings may cause a delay in the braking effect, resulting in a significantly longer braking distance, which could lead to an ...