2005 Cadillac DeVille Owner's Manual - Page 152

* (Bi-Level): 7 (Floor): This mode directs half the air to the upper outlets, and then directs the remaining air to the floor outlets. This mode directs the air to the floor outlets. Passenger Compartment Air Filter The passenger compartment air filter traps most of the pollen from the air entering your vehicle. Like your vehicle's engine air cleaner/filter, it may need to be changed periodically. For how often to change the passenger compartment air filter, see Scheduled Maintenance on page 6-4. y9z (Fan): Pressing this switch cancels automatic operation and places the system in manual mode. Press this switch to increase or decrease the fan speed. Press the MODE switch until AUTO is displayed to return to automatic operation. yTEMP z (Temperature): Press this switch to increase or decrease the temperature for the rear seat passengers. For cool air to be sent to the rear of the vehicle, the air-conditioning system on the main climate-control panel must be on. If it is not on, then the temperature in the rear of the vehicle will remain at cabin temperature. Be sure to keep the area under the front seats clear of any objects so that the air inside of your vehicle can circulate effectively. The access panel for the passenger compartment air filter is located under the hood near the windshield, on the passenger's side of the vehicle. 3-36