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The cabin air filter in your 2004 Subaru Legacy filters the air that is blown from your heater or air conditioner into the cabin of your Legacy. You need to change it at least once a year or every 20,000 miles. Replacing the cabin air filter (also know as the dust filter, hvac filter, pollen filter, air conditioner filter and hepa filter) will improve the air quality of your Legacy, will put less strain on your heating and air conditioning system and can increase your gas mileage. These filters are fairly inexpensive, so check out our parts page for great deals on a new one (tip: buy several - they don't expire and you will be able to quickly swap the old one out for a fresh one).
Not all Subarus have a cabin air filter and for some models, the inclusion of a cabin air filter depends on what trim level you have (L). Newer cars are more likely to have a cabin air filter than older models. If your Legacy has a funky odor when you turn on the heat or air conditioner, or it seems like the fan doesn't work as well as it used to, replacing your cabin air filter is a quick and cheap fix! The video above shows you the cabin air filter location in your Legacy and how to change it!
If you are leaking oil and parking on your oil spots each night, the oil is breaking down your tires' rubber2001 Subaru Outback Limited 2.5L 4 Cyl. Wagon
If your blinker doesn't blink, or blinks rapidly, you likely have a burnt out bulb2001 Subaru Outback Limited 2.5L 4 Cyl. Wagon
Carmakers are hiding interior fuse boxes all over the place these days - see how to check your interior fuses here!2001 Subaru Outback Limited 2.5L 4 Cyl. Wagon
Sure you can take it in for a $19 lube, but are you OK with a stripped oil pan and cheap parts in return?2001 Subaru Outback Limited 2.5L 4 Cyl. Wagon
White light when you back up - yup, they burn out and you can replace them with bright LEDs2001 Subaru Outback Limited 2.5L 4 Cyl. Wagon
Odd electrical problems that come out of nowhere can often signify a blown engine fuse - check and change yours here!2001 Subaru Outback Limited 2.5L 4 Cyl. Wagon