1996 Mercury Sable Owner's Manual - Page 75

If the engine is idling while you are stopped in an open area for long periods of time, open the windows at least one inch (2.5 cm). Also, adjust the heating or air conditioning to bring in outside air. u If you use the heater, set the fan speed on u If you use the air conditioner, set the fan either medium or HI with the select knob on either R (floor) or VENT. speed on either medium or HI with the select knob on A/C. (Do not use MAX A/C.) set the fan speed on medium or high and press the S (panel and floor) or R (floor) manual override button. (Do not use AUTO or MAX A/C.) u If you use the automatic temperature control, 72