See also:

Panic alarm
To activate: press button 1 for at least one second. An alarm sounds and the exterior lighting flashes. To deactivate: press button 1 again. or Insert the SmartKey into the ignition loc ...

Please bear the following in mind
At the onset of winter, have your vehicle winterproofed at a qualified specialist workshop, e.g. at an authorized Mercedes- Benz Center. Observe the notes in the "Changing a wheel" ...

General information
Portable electronic devices in the vehicle may seriously impair radio reception. ...