2007 Dodge Ram 1500 Pickup Owner's Manual - Page 292

292 UNDERSTANDING YOUR INSTRUMENT PANEL Dual Zone Temperature Control the driver and front passenger. The blue area of the scale indicates cooler temperatures while the red area indicates warmer temperatures. Circulation The cab is designed with features to promote outside air circulation. There are grilles in the cab back panel. These are air exhausters that provide the means for regular exchange of cab air. Side window demisters direct air flow specifically to the window glass to help prevent interior fogging of the glass. They are located in the extreme outside upper edges of the instrument panel. The demisters also provide extra air ducts for circulation. They are in operation whenever the Floor, Mix or Defrost modes are in use. NOTE: When you turn off the engine you may hear a hissing sound from under the hood for a short period of time. This is a normal condition that occurs if the air Dual Zone Temperature Control Use this control to regulate the temperature of the air inside the passenger compartment. This is accomplished by having separate temperature control slides for both