Function restrictions
Depending on the DVD, it is possible that certain functions or actions will be temporarily blocked or may not function at all.
As soon as you try to activate these functions
or actions, you will see the 
symbol
in the
display.
See also:
Brake fluid
WARNING
Over a period of time, the brake fluid 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 t ...
Activating/deactivating Blind Spot Assist
You can use the Blind Spot Asst. function
to activate or deactivate Blind Spot Assist
or Active Blind Spot Assist.
Press
or
on the steering wheel
to select the DriveAssist menu.
Press
...
Additives
Do not use any additives in the engine oil.
This could damage the engine. ...