2007 Cadillac STS Owner's Manual - Page 232

Manual Operation yN z (Mode): Pressing the mode switch and changing the mode cancels automatic operation and allows the operator to manually select the air delivery location. Press AUTO to return to automatic operation. The outboard air outlets always receive airflow regardless of the mode selected. See Outlet Adjustment on page 237 to change this airflow from the outboard outlets. To change the current mode, select one of the following: The mode switch can also be used to select the defog mode. Information on defogging and defrosting can be found later in this section. yAz (Fan): Press this switch to increase or decrease the fan speed. Pressing this switch cancels automatic operation and allows the operator to manually select the amount of airflow. Press AUTO to return to automatic operation. If the airflow seems low when the fan speed is at the highest setting, the passenger compartment air filter may need to be replaced. For more information, see Passenger Compartment Air Filter on page 239 and Scheduled Maintenance on page 505. Y (Vent): This mode directs air to the instrument panel outlets. \ (Bi-Level): This mode directs about half of the air to the instrument panel outlets, and then directs 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. h (Recirculation): Press this button to control the air source for the climate control system. If in AUTO mode, press this button once to select recirculation. This mode keeps outside air from coming in the vehicle and recirculates the air in the vehicle. It can be used to prevent outside air and odors from entering the vehicle or to help cool the air inside the vehicle more quickly. [ (Floor): This mode directs most of the air to the floor outlets with some air directed to the outboard outlets, and a little air directed to the windshield and side windows. 232