2012 Lexus RX 450h Navigation Manual - Page 289

AIR CONDITIONING (g) Rear window and outside rear view mirror defogging The defoggers will automatically turn off after 15 to 60 minutes. The operation time changes according to the ambient temperature and vehicle speed. If further defrosting or defogging is desired, simply actuate the switch again. When the surface has cleared, push the button once again to turn the defogger off. Continuous use may cause the 12−volt battery to discharge, especially during stop−and−go driving. The defogger is not designed to dry rain water or to melt snow. If the outside rear view mirrors are heavily coated with ice, use a spray de−icer before operating the system. To turn the electric rear window and outside rear view mirror defogger on, push the button above. The "POWER" switch must be in ON mode. The thin heater wires on the inside of the rear window and the heater panels in the outside rear view mirrors will quickly clear the surface. Keep your hands off the mirror faces when the system is on. The indicator light is on when the defogger is operating. NOTICE D When cleaning the inside of the rear window, be careful not to scratch or damage the heater wires or connectors. D To prevent the12−volt battery from being discharged, turn the switch off when the hybrid system is off . CAUTION When the outside rear view mirror defoggers are on, do not touch the outside surface of the rear view mirror as it can become very hot and burn you. 317