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:
Resetting to factory settings
For safety reasons, the Day Lights function
in the Lights submenu is only reset when the
vehicle is stationary.
Press the
or
button on the
steering wheel to select the Settings
menu.
P ...
Important safety notes
WARNING
Severe conditions (e.g. strong air pollution) may require replacement of the
filter before
its scheduled replacement interval. A clogged
filter will reduce the air volume to t ...
Refrigerant of the air-conditioning
system
The air-conditioning system is filled with
R134a refrigerant and a special PAG
lubricant.
Never use refrigerant R 12 (CFC) or
mineral lubricants. Otherwise, you could
damage the air-cond ...