1999 Oldsmobile Aurora Owner's Manual - Page 147

yellowblue Operating the RECIRC ON mode in cold temperatures or under high humidity conditions may cause moisture to form on the inside of the windshield. If this condition occurs, deselect the RECIRC ON button. A/C ON: Press this button to turn the air conditioning on and off. If the system is operating in the automatic mode, the A/C ON indicator light will automatically illuminate. In the auto mode, the A/C compressor will only operate when the system determines it is needed. OFF: Turn the AUTO-PUSH knob to OFF. Turning the system off will cause the fan to turn off and the airflow to be directed out the lower floor outlets. The system will still try to keep the interior of the vehicle at the previously chosen comfort setting. The outside temperature will show in the display when the system is set to OFF. DEFOG: This setting directs the majority of the airflow to the lower floor outlets and the front defroster. A small amount of airflow is directed to the side window defroster outlets. This mode can be useful to remove the moisture from the inside of the windshield when the outside temperature is cold or the humidity is high. DEF (Defrost): This setting directs the majority of the airflow to the windshield with some airflow to the side window defrosters and lower floor outlets. To increase the fan speed, turn the AUTO FAN knob clockwise. RECIRC ON: Press this button to limit the amount of outside air entering your vehicle. This is helpful when you are trying to cool the interior of the vehicle quickly or limit the amount of outside air entering your vehicle for some other reason. The RECIRC ON button and the AUTO-PUSH knob may be selected at the same time. The system will remain in RECIRC ON until the ignition is turned off, then the system will return back to the previously selected mode. RECIRC ON may be selected in all manual airflow modes except front defrost. 3-5