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:
Immobilizer
The immobilizer prevents your vehicle from being started without the correct
SmartKey.
When leaving the vehicle, always take the SmartKey with you and lock the vehicle.
The engine can be started ...
Checking tire pressure electronically
Make sure that the SmartKey is in position
2 in the ignition lock.
Press the or
button on the
steering wheel to select the Service
menu.
Press the or
button to select
Tire Pressure. ...
Operating audio player or audio media
Audio data from various audio devices or
media can be played, depending on the
equipment installed in the vehicle.
– Switch on COMAND and select the audio
device or medium (see the separate
o ...
