Subaru 2002 Impreza - Manual (Page 157)

IMPREZA(NA) A1830BE-A (ENGLISH)
Climate control
4-12
Air filtration system (if equipped)
If your vehicle’s air conditioning system is equipped
with an air filtration system, replace the filter element
according to the replacement schedule shown
below. This schedule should be followed to maintain
the filter’s dust collection ability. Under extremely
dusty conditions, the filter should be replaced more
frequently. Since the filter element is a viscous type,
it is unnecessary to clean or wash the element.
Have your filter checked or replaced by your
SUBARU dealer.
Replacement schedule:
Every 12 months or 7,500 miles (12,000 km)
whichever comes first
NOTE
The filter can influence the air conditioning, heat-
ing and defroster performance.