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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!
Properly inflated tires is the easiest way to improve fuel economy. The right tire pressure is NOT on the side of your tire btw2009 Mercedes-Benz C300 Sport 3.0L V6
Burnt out brake lights increase your chance of getting rear ended - check and change yours today2009 Mercedes-Benz C300 Sport 3.0L V6
The best way to fix leaking hoses is to replace them, but if you don't have time, a stop leak product might work for you2009 Mercedes-Benz C300 Sport 3.0L V6
Flushing the coolant in your car is not that hard and will extend the life of your engine tremendously - learn how here!2009 Mercedes-Benz C300 Sport 3.0L V6
Don't be caught in the fog with burnt out fog light bulbs2009 Mercedes-Benz C300 Sport 3.0L V6
Don't send mixed signals - if your turn signal doesn't blink, or blinks rapidly, you likely have a burnt out bulb2009 Mercedes-Benz C300 Sport 3.0L V6