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:

Playing a DVD
DISC·AUX button: Park the vehicle in a safe location for the front seat occupants to operate the DVD drive while watching the images. Push the DISC·AUX button on the instrument panel and turn the di ...

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, b ...

Underbody
In areas where road salt is used in winter, it is necessary to clean the underbody regularly in order to prevent dirt and salt from building up and causing the acceleration of corrosion on the underbo ...