BMW 328i xDrive Owner's Manual page 105

Ventilation in the rear
1 Use the thumbwheel to adjust the
temperature:
> Turn toward blue: colder
> Turn toward red: warmer
2 Use the thumbwheel to smoothly open and
close the air vents
3 Use the lever to change the direction of the
airflow
Microfilter/activated-charcoal filter
The microfilter traps dust and pollen in the
incoming air. The activated-charcoal filter pro-
vides additional protection by filtering gaseous
pollutants from the outside air. Your BMW cen-
ter replaces this combined filter during routine
maintenance.
Online Edition for Part no. 01 41 2 604 304 - © 02/10 BMW AG
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