2008 Dodge Ram 2500 Pickup Owner Manual - Page 263

UNDERSTANDING YOUR INSTRUMENT PANEL 261 Blower Control The rotary knob on the left of the control panel is the blower control. Turn the knob clockwise to one of the four positions to obtain the blower speed you desire. To turn the blower off, turn the knob to the far left position. Temperature Control The rotary knob at the center of the control panel controls the temperature of the interior air. You can choose your degree of comfort by rotating the knob. The coldest temperature setting is to the extreme left (blue region) and the warmest setting is to the extreme right (red region) of the rotation. Air Conditioning and Heating - If Equipped 4 Air Conditioning And Heating Air Conditioning Operation To turn on the Air Conditioning, set the fan control at any speed and press the snowflake button located at the right of the control panel. Conditioned air will be directed through the outlets selected by the mode control. A light in the snowflake button shows that the air conditioning is on. Press the button a second time to turn the air conditioning off.