2009 Toyota Prius Owners Manual - Page 238

OM47614U_PRIUS_U.book Page 210 Monday, January 11, 2010 11:02 AM 3-2. 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 12 volt battery discharge Do not leave the automatic air conditioning system on longer than necessary when the hybrid system is not operating. 210 PRIUS_U_(OM47614U)