See also:

Washing by hand
Carefully remove all deposits of road salt as soon as possible when driving in winter. Also, clean the insides of the wheels when washing the underbody of the vehicle. •► Do not use hot wa ...

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. ...

Correct use of the seat belts
WARNING USE SEAT BELTS PROPERLY - Seat belts can only work when used properly. Never wear seat belts in any other way than as described in this section, as that could result in serious injuri ...