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The cabin air filter in your 2009 Mercedes-Benz C300 filters the air that is blown from your heater or air conditioner into the cabin of your C300. 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 C300, 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 Mercedes-Benzs have a cabin air filter and for some models, the inclusion of a cabin air filter depends on what trim level you have (Sport). Newer cars are more likely to have a cabin air filter than older models. If your C300 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 C300 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' rubber2009 Mercedes-Benz C300 Sport 3.0L V6
Leaking coolant is usually a sign that your water pump needs to be replaced. This video shows you how to quickly plug it2009 Mercedes-Benz C300 Sport 3.0L V6
Got a short fuse? Don't blow a fuse, change it!2009 Mercedes-Benz C300 Sport 3.0L V6
There's no reason to check the washer fluid level without adding some - see how to do it here!2009 Mercedes-Benz C300 Sport 3.0L V6
Small bulbs that burn out regularly - did you know you can replace these with LED lights?2009 Mercedes-Benz C300 Sport 3.0L V6
Want an easy way to save $500? Rotate your tires at least three times per year2009 Mercedes-Benz C300 Sport 3.0L V6