1997 Cadillac Catera Owner's Manual - Page 147

Ventilation Tips 0 Defrosting Use defrost to remove fog or ice from the windshield quickly in extremely humid cold conditions. or Press the defrost button on the control panel and adjust the fan speed to the highest position.Make sure that the side air vents are opened. Rotate both TEMP/AUTO knobs clockwise as needed toadjust the temperature. To warm the foot area while in defrost, press the MODE button untilthe heateddefrost symbol appears (see "Manual Operation" earlier in this section). Note that recirculationis not available in the defrost mode. Keep the hood andfront air inlet free of ice, snow or any other obstruction (such as leaves). The heater and defroster will work far better, reducing the chance of fogging the inside of the windows. When you entera vehicle in cold weather, adjust the fan to the highest speedfor afew moments before driving off. This helps clear the intake outlets of snow and moisture, and reduces the chance of fogging theinside of the windows. Keep the air path under the front seats clear of objects. This helps circulate air throughout your vehicle. 0 0 Passenger Compartment Air Filter This ventilation system includes an air filter that helps to remove dust, pollen, etc. from the air flowing into your vehicle. A restriction in the airflow coming into the passenger compartment could be the result dirt of in the filter. For information about changing the filter, see "Passenger Compartment Air Filter Replacement" in the Index. See the Maintenance Schedule booklet for when to change the filter. 3-8