Rear window and outside mirror defroster/windshield deicer (if so equipped) switch

Rear window and outside mirror defroster/windshield deicer (if so equipped) 
switch  - Instruments and controls - Infiniti QX Owners Manual - Infiniti QX

See also:

Windshield wiper and washer switch
WARNING In freezing temperatures the washer solution may freeze on the window and obscure your vision which may lead to an accident. Warm the window with the defroster before you wash the w ...

Exterior front
1. Hood (P.3-18) 2. Windshield wiper and washer — Switch operation (P.2-33) — Rain-sensing auto wiper system (P.2-34) — Wiper blade replacement (P.8-20) — Window washer fluid (P.8-15) ...

Displaying user guide
If you use the INFINITI Voice Recognition system for the first time or you do not know how to operate it, you can display the User Guide for confirmation. You can confirm how to use voice commands by ...