2009 Toyota Camry Owners Manual - Page 170

3-1. Using the air conditioning system and defogger Air flows to the feet and the windshield defogger operates. The air intake is automatically switched to outside air mode. It is not possible to return to recirculated air mode when the switch is on. Pressing to turn the air conditioning on clears the windshield and side windows faster. Air flows to the windshield and side windows. The air intake is automatically switched to outside air mode. Pressing to turn the air conditioning on clears the windshield and side windows faster.