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:

Adjusting the time
1. To set the clock forward, push the button 1 . 2. To set the clock backward, push the button 2 . 3. To move forward or backward faster, push and hold the button more than 5 seconds. For details a ...

Freeing a frozen door lock
To prevent a door lock from freezing, apply deicer through the key hole. If the lock becomes frozen, heat the key before inserting it into the key hole, or use the INFINITI Intelligent Key. ...

Manual Transmission
WARNING • Do not downshift abruptly on slippery roads. This may cause a loss of control.• Do not over-rev the engine when shifting to a lower gear. This may cause a loss of control or engine damage. ...