1996 Ford Windstar Owner's Manual - Page 115

Instrument Panel Controls equipped with a rear seat climate control system, the instrument panel will also include a rear seat climate control knob. To turn on the rear passenger compartment control system, select REAR CTRL, Medium Low, Medium High, or High. With the knob set to REAR CTRL, rear seat passengers will have control of rear fan speed on the rear seat climate control panel. Positions Medium Low, Medium High, or High will control rear fan speed from the front control panel. The climate controls - main and auxiliary system A/C - Heater System - if equipped The standard heating system and the heating portion of the heating and air conditioning system are essentially identical. There is one exception, however; the air conditioning compressor will automatically engage when the P (DEFROST/FLOOR) or V (DEFROST) position is selected to aid in defogging and defrosting the inside glass when the outside temperature is above approximately 45˚F (7˚C). Refer to the heating system operating instructions covered previously for a more detailed explanation of heating system operation. 113