2007 Cadillac DTS Owner's Manual - Page 206

Manual Operation 9 (Fan): Turn the left control either to the left or right to adjust the fan speed. Turning this control completely counterclockwise will turn on the automatic fan operation. Turning this control to the "O" position will turn the climate control system off. If the airflow seems low when the fan speed is at the highest setting, the passenger compartment air filter may need to be replaced. See Passenger Compartment Air Filter on page 213. 9 (Off): Turn the left control to this position to turn the entire climate control system off. To change the current mode, select one of the following positions using the right control: AUTO: Turn the control to this position to turn on the automatic delivery mode operation. * (Bi-Level): Turn the control to this mode to direct approximately half of the air to the instrument panel outlets and most of the remaining air to the floor outlets. In automatic operation, cooler air is directed to the upper outlets and warmer air to the floor outlets. 7 (Floor): Turn the control to this mode to direct most of the air to the floor outlets with some air directed to the side window outlets and the windshield. The mode control can also be used to select the floor/defog mode. In this mode, the system will automatically use outside air. If recirculation is selected, it will only stay on for three minutes to reduce windshield fogging. Information on defogging and defrosting can be found later in this section. F (Vent): Turn the control to this mode to direct air to the instrument panel outlets. : (Outside Air): Press this button to allow outside air to come into the vehicle. It is used to prevent the air inside the vehicle from becoming too dry. Press this button to turn the outside air mode on or off. When the button is pressed, the indicator light will come on. Pressing the recirculation button will cancel this mode. 206