Brake fluid level
If you notice that the brake
fluid level in
the brake fluid reservoir has fallen to the
MIN mark or less, check the brake system
immediately for leaks. Also check the
thickness of the brake linings. Contact a
qualified specialist workshop, e.g. an
authorized Mercedes-Benz Center
immediately.
Do not add brake fluid. This does not
correct the error.
Only check the brake fluid level when the vehicle is stationary and on a level surface.

The brake fluid level is correct if it is between MIN marking 2 and MAX marking 1 on the brake fluid reservoir.
See also:
Active Driving Assistance package
General notes
The Active Driving Assistance package
consists of DISTRONIC PLUS
Active Blind Spot Assist an
Active Lane Keeping Assist. ...
General information
Do not exceed the legally prescribed maximum speed for vehicle/trailer
combinations in the relevant country. This lowers the risk of an accident.
Only install an approved trailer coupling on y ...
Accepting a call
If someone calls you when you are in the Tel
menu, a display message appears in the
multifunction display, for example:
Press the
button on the steering
wheel to accept an incoming call.
...
