Subaru Legacy Outback 2008 Owner's Manual page 206

CAUTION
We recommend that you contact
your SUBARU dealer if the following
occurs, even if it is not yet time to
change the filter:
– Reduction of the air flow through
the vents.
– Windshield gets easily fogged or
misted.
NOTE
The filter can influence the air condi-
tioning, heating and defroster perfor-
mance if not properly maintained.
4-13
Climate control