See also:

Winter Operation4
When operating the system during the winter months, make sure the air intake, located directly in front of the windshield, is free of ice, slush, snow, or other obstructions. ...

A/C Air Filter — If Equipped
The A/C Filter prevents most dust and pollen from entering the cabin. The filter acts on air coming from outside the vehicle and recirculated air within the passenger compartment. Refer to “Main ...

2009 Jeep Liberty review
When you're driving around in an SUV, it's a good bet that you're not going to get the best mileage numbers. My test drive of the 2009 Jeep Liberty just happened to fall on Earth Day, which made m ...