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:

How to use the STATUS button
The STATUS button is used to display system information. Three different split screens of information are available. Press the STATUS button multiple times to cycle through these screens as follows: ...

Storage box (if so equipped)
Storage box (if so equipped) To open, push the storage box lid 1 as illustrated. Do not place valuable items in the storage box. Do not use the storage box as an ashtray. ...

General maintenance
During the normal day-to-day operation of the vehicle, general maintenance should be performed regularly as prescribed in this section. If you detect any unusual sounds, vibrations or smell, be sure t ...