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The cabin air filter in your 2004 Ford Focus filters the air that is blown from your heater or air conditioner into the cabin of your Focus. 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 Focus, 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 Fords have a cabin air filter and for some models, the inclusion of a cabin air filter depends on what trim level you have (ZTS). Newer cars are more likely to have a cabin air filter than older models. If your Focus 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 Focus and how to change it!
Flushing the coolant in your car is not that hard and will extend the life of your engine tremendously - learn how here!2004 Ford Focus ZTS 2.3L 4 Cyl.
Don't send mixed signals - if your turn signal doesn't blink, or blinks rapidly, you likely have a burnt out bulb2004 Ford Focus ZTS 2.3L 4 Cyl.
Odd electrical problems that come out of nowhere can often signify a blown engine fuse - check and change yours here!2004 Ford Focus ZTS 2.3L 4 Cyl.
If your car is leaking a small amount of power steering fluid - see this video on how to fix the leak2004 Ford Focus ZTS 2.3L 4 Cyl.
Sure you can take it in for a $19 lube, but are you OK with a stripped oil pan and cheap parts in return?2004 Ford Focus ZTS 2.3L 4 Cyl.
Don't be the guy with your third brake light burnt out2004 Ford Focus ZTS 2.3L 4 Cyl.