2000 Cadillac Seville Owner's Manual - Page 158

If your vehicle is sitting out on a hot day and you have it set on AUTO, the air will first flow out the floor outlets for a few seconds. This is normal. This is to remove hot air from the air outlets. As the air is cooled, the airflow will move through the air conditioning outlets. To avoid blowing cold air in cold weather, the system will start at reduced fan speeds until warm air is available. The length of reduction depends on the outside air temperature, engine coolant temperature or the time since the engine was last started. As the coolant warms up, the blower fan speed will gradually increase and air will flow from the heater outlets, with some airflow to the windshield to prevent fogging under most normal conditions. If you select defrost mode or a manual fan speed, this function will be skipped. If you leave your vehicle, the system will remember the control setting the next time you start your engine, except for recirculation and defrost. Each ignition cycle cancels recirculation. Defrost will change to automatic operation when the ignition is shut off and then turned back on. Manual Operation You may manually adjust the air delivery mode, fan speed, air input and compressor operation using the following controls. DEFROST (FRONT): Press this button to quickly remove fog or frost from the windshield. This setting sends most of the airflow to the windshield with only a small amount to the floor outlets. RECIRCULATION: Press this button to limit the amount of fresh air entering your vehicle. This is helpful when you are trying to cool the air quickly or limit odors entering your vehicle. In the AUTO mode, the system will use recirculation as necessary to cool the air. Pressing the recirculation button will change the operation to a manual mode and the air will recirculate non-stop. Press this button again to turn off the recirculation feature. If you notice the windows fogging, press the recirculation button to exit the recirculation mode. Recirculation is not available in the defrost mode. 3-4