See also:

Roadside Assistance button
•► Press and hold Roadside Assistance button 1 for more than two seconds. This initiates a call to the Mercedes-Benz Customer Assistance Center. The indicator lamp in Roadside Assistanc ...

Sidewall
The part of the tire between the tread and the bead. ...

Important notes on tire pressure
WARNING Should the tire pressure drop repeatedly:  - check the tire for foreign bodies.  - check whether the wheel is losing air or the valve is leaking.  - make sure that onl ...