See also:

Ignition switch positions
LOCK: Normal parking position (0) ● Intelligent Key: ● PUSH OFF- The steering lock can only be locked at this position (for vehicles equipped with a steering lock mechanism). OFF: ( ...

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 ...

Spark plugs
Be sure the engine and ignition switch are off and that the parking brake is engaged securely. Be sure to use the correct socket to remove the spark plugs. An incorrect socket can dam ...