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:

Tire labeling
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Draining of coolant water
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INFINITI Intelligent Key Operation
You can lock or unlock the doors without taking the Intelligent Key out of your pocket or bag. When you carry the Intelligent Key with you, you can lock or unlock all doors by pushing the door ha ...