Mercedes-Benz GLC : Display messages / Mercedes me connect

Other information:
DANGER Risk of fatal injury due to damaged
connecting cables or sockets
You could receive an electric shock if the
connecting cable or the 115 V power socket
is pulled out of the trim or is damaged or
wet.
Use only connecting
cables that are dry
and free of damage...
Requirements:
The engine has been warmed up.
The vehicle is parked on a level surface.
The engine is running at idle speed.
The hood is closed.
The engine oil level is determined during driving.
Determining the engine oil level can take up to
30 minutes with a normal driving style and even
longer with an active driving style...