Selecting an active partition (USB mass storage devices only)
You can select this function for USB mass storage devices when the storage device is partitioned. Up to four partitions (primary or logical; FAT format) are supported.
The Windows formatting program
supports FAT partitioning up to 32 GB as
standard.
Select Media Interface in the basic
display by sliding 
and turning
the
COMAND controller and press 
to
confirm.
Select Select Active Partition and
press to confirm.
See also:
Setting the side air vents
Setting the side air vents
To open/close: turn
thumbwheel 3 to the
left or right.
Side window defroster vent 1 is
never
completely shut, even if side air vent 2 is
shut. ...
Cleaning the headliner and carpets
Roof lining: use soft brushes or dry shampoo if it is particularly dirty.
Carpets: use carpet and textile cleaners that have been approved and recommended
by Mercedes-Benz.
...