Infiniti QX: Rear window and outside mirror defroster/windshield deicer (if so equipped) 
switch - Instruments and controls - Infiniti QX Owner's ManualInfiniti QX: Rear window and outside mirror defroster/windshield deicer (if so equipped) switch

Rear window wiper and washer switch
WARNING In freezing temperatures the washer solution may freeze on the rear window glass and obscure your vision. Warm the rear window with the defroster before you wash the rear window. C ...

Rear window and outside mirror defroster
To defog/defrost the rear window glass and outside mirrors, start the engine and push the switch 1 on. The indicator light 2 will come on. Push the switch again to turn the defroster off. ...

See also:

Recirculation
When selected, the air is inside of the screen. recirculated inside the vehicle. This helps to maintain a high or low temperature, and is useful for preventing fumes entering the vehicle. Note: ...

Active light function
The active light function is a system that moves the headlamps according to the steering movements of the front wheels. In this way, relevant areas remain illuminated while driving. This allows ...

Capacities and Specifications
The following approximate capacities are given in metric and English conversions. See Recommended Fluids and Lubricants  for more information. Engine Specifications ...