Does the 2009 Ford Focus have a cabin air filter?

Yes, the 2009 Focus does come equipped with a cabin air filter. As their name may suggest, they serve to filter out impurities, particles, dust and other irritants from the cars cabin, and play an important role in keeping the vehicle clean. If You see that Your 2009 Focus is missing an air filter out of the factory, adding one is very simple. You can purchase a cabin air filter directly from Ford, or from other reputable vendors for very low prices. The cabin air filter can be found behind the glove compartment. It shouldnt have any screws or caps holding it in place. Simply pull it out and replace with a new one every 20,000 to 25,000 miles and Youre all set!