2010 Toyota 4Runner Owners Manual - Page 320

3-1. Using the air conditioning system and defogger Air flows to the feet. CTH31AS006 Air flows to the feet and the windshield defogger operates. The air intake is automatically switched to outside air mode. Pressing CTH31AS007 to turn the cool- ing and dehumidification function 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. It is not possible to return to recirculated air mode when the switch is on. CTH31AS008 Pressing to turn the cool- ing and dehumidification function on clears the windshield and side windows faster. 298