2011 Toyota Avalon Owners Manual - Page 247

3-1. Using the air conditioning system and defogger CAUTION n To prevent the windshield from fogging up Do not use during cool air operation in extremely humid weather. The difference between the temperature of the outside air and that of the windshield can cause the outer surface of the windshield to fog up, blocking your vision. NOTICE n To prevent battery discharge Do not leave the automatic air conditioning system on longer than necessary when the engine is not running. 3 Interior features 223 AVALON_U (OM41428U)