2011 Lexus RX 450h Owners Manual - Page 390

3-1. Using the air conditioning system and defogger Rear window defogger switch Defoggers are used to defog the rear window, and to remove raindrops, dew and frost from the outside rear view mirrors. Vehicles with a navigation system Owners of models equipped with a navigation system should refer to the "Navigation System Owner's Manual". Vehicles without a navigation system Turns the rear window and outside rear view mirror defoggers on/off The defoggers will automatically turn off after 15 to 60 minutes. The operation time changes according to the ambient temperature and vehicle speed. n Operating conditions The "POWER" switch must be in ON mode. n The outside rear view mirror defoggers Turning the rear window defogger on will turn the outside rear view mirror defoggers on. CAUTION n When the outside rear view mirror defoggers are on Do not touch the outside surface of the rear view mirrors, as they can become very hot and burn you. 308