Press the switch to heat or defrost the rear window.
The key must be in position "ON" (off).
The thin heater wires on the inside of the rear window will quickly make the surface transparent. While the defroster is operating, the identification light will come on.
Also, the heating panels on the outside rear-view mirrors will quickly make the surfaces of the mirrors transparent.
Press the switch again to turn off the defroster.
After the defroster has been running for about 15 minutes, the system will turn off automatically.
Check that the glass heaters are turned off when the glass surfaces become transparent. Leaving the defrosters on for extended periods of time can drain the battery. Especially when driving with frequent stops. Glass heaters are not intended for drying glass from rainwater and for thawing snow.
If the exterior mirrors are heavily iced, use a de-icing spray before operating the switch.