See also:

Cleaning the seat belts
– Use clean, lukewarm water and soap solution. Do not clean the seat belts using chemical cleaning agents. Do not dry the seat belts by warming them above 176 °F (80 °C) or placing them ...

Adjusting the steering wheel manually
1 Release lever 2 To adjust the steering wheel height 3 To adjust the steering wheel position (fore-and-aft adjustment) - Push release lever 1 down completely. The steering column is unlocked. ...

Please bear the following in mind
For safety reasons, Mercedes-Benz recommends that you only use Tires and wheels which have been approved by Mercedes-Benz specifically for your vehicle. These tires have been specially ada ...