Mercedes-Benz GLC : Display messages / Mercedes me connect

Other information:
Requirements:
The vehicle is prepared for a wheel change.
Plastic hub cap
To remove: turn the
center cover of the hub
cap counter-clockwise and remove the hub
cap.
To install: make sure
that the center cover
of the hub cap is turned counter-clockwise...
Requirements:
The ignition is switched off.
To activate: press button
for approximately one second.
A visual and audible alarm is triggered.
To deactivate: briefly press button
again.
or
Press the start/stop button on the cockpit, with the SmartKey inside the vehicle...