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.
 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:
Socket in the cargo compartment
   
X Lift up the cover of socket :. ...
   
Power washers
   WARNING
Do not use power washers with circular-jet 
nozzles (dirt grinders) to clean your vehicle, in 
particular the tires. You could otherwise 
damage the tires and cause an accident.
 Always ...
   
Before changing a fuse
     Park the vehicle and apply the parking 
brake.
  Switch off all electrical consumers.
  Remove the SmartKey from the ignition 
lock.
The fuses are located in various fuse boxes:
 ...
   
