See also:

Releasing the trunk lid
Releasing the trunk lid Press the button for longer than 0.5 seconds to open the trunk lid. The trunk release button will not operate when the ignition switch is placed in the ON position. ...

Warning/indicator lights and audible reminders
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Never leave these keys in the vehicle.
As many as 4 Intelligent Keys can be registered and used with one vehicle. The new keys must be registered by a NISSAN dealer prior to use with the Intelligent Key and NISSAN Vehicle Immobilizer ...