2003 Lincoln Aviator Owner Guide 1st Printing (Spanish) - Page 468

Climate Controls AIRFLOW CONTROL Controls whether airflow will or will not be distributed through the floor console. To select airflow from the registers of the floor console, slide the airflow control to the top. To select no airflow from the registers of the floor console, slide the airflow control to the bottom. REAR WINDOW DEFROSTER Used to manually enable or disable R rear window defrost in all modes. After approximately 10 minutes of rear defrost operation, the climate control system will automatically disable the rear defrost operation. If desired, the rear defrost can be manually disabled through the use of the rear defrost button. When operating, the rear defrost indicator will be lit. 100