1999 Subaru Impreza Owner's Manual - Page 143
1999 Subaru Impreza Manual
Page 143 highlights
Climate control from the method for CFC12 (freon). Consult your SUBARU dealer for service. Repairs needed as a result of using the wrong refrigerant are not covered under warranty. Air filtration system (option) If your vehicle's air conditioning system is equipped with a optional 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 viscous type, it is unnecessary to clean or wash the element. It is recommended that you have your filter checked or replaced by your SUBARU dealer. For replacement, use only a genuine SUBARU air filter kit. Replacement schedule: Every 12 months or 7,500 miles (12,000 km) whichever comes first NOTE The filter can influence the air conditioning, heating and defroster performance. J Replacement procedure Cooling unit Filter cover and rubber seal Old filter Screws HS0253 HS0254 1. Remove the filter cover by removing the two (2) screws. - CONTINUED - 4-11