2009 Toyota Corolla Owners Manual - Page 155

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 stopped. 3 Interior features 189