Brake fluid
WARNING 
The brake fluid constantly absorbs moisture
from the air; this lowers its boiling point.
If the boiling point of the brake fluid is too low,
vapor pockets may form in the brake system when the brakes are applied hard
(e.g. when
driving downhill). This would impair braking
efficiency.
You should have the brake fluid renewed at
regular intervals. The brake fluid change
intervals can be found in the Service Booklet.
Only use brake fluid approved by Mercedes- Benz. Information about approved brake fluids can be obtained from any authorized Mercedes-Benz Center.
See also:
Switching to navigation mode
Press the function button once
or
twice.
or
Select Navi in the main function bar by
sliding and turning
the COMAND
controller and press to confirm.
In both cases, you will see ...
Cleaning the steering wheel and gear or
selector lever
Thoroughly wipe with a damp cloth or use
leather care agents that have been
recommended and approved by Mercedes-Benz. ...
Problems with the engine
Problem
The engine does not start. The starter motor can be heard.
Possible causes/consequences and Solutions
There is a malfunction in the engine electronics.
There is a malfunction in the fu ...