See also:

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 ...

Engine serial number
The number is stamped on the engine as shown. ...

Supplemental air bag warning labels
Warning labels about the supplemental frontimpact air bag system are placed in the vehicle as shown in the illustration. ...