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:
Petrol engines: 20 percent fuel saving thanks to direct injection
The E 200 CGI and E 250 CGI are equipped with the newly developed
four-cylinder direct-injection engine with a displacement of 1.8 litres,
turbocharging and variable intake and exhaust camshafts. ...
General notes
WARNING
All categories of messages contain important information which should be taken
note of and,
where a malfunction is indicated, addressed as soon as possible at an authorized
Mercedes-Be ...
Hiding a service message
X Press the % or a button on the steering wheel. ...
