Removal and Installation
1. Release the lock knob at the back of the Intelligent Key and remove the mechanical key.
2. Insert a suitable tool (A) wrapped with a cloth into the slit of the corner and twist it to separate the upper part from the lower part.
CAUTION:

3. Replace the battery with new one.
Battery replacement :Coin-type lithium battery (CR2025)

4. Align the tips of the upper and lower parts, and then push them together until it is securely closed.
CAUTION:
WITHOUT INTELLIGENT KEY SYSTEM
Keys
Type A (if so equipped)
1. Master key
2. Valet key
3. Key number plate
A key number plate is supplied with your keys.
Record the key number and keep it in a safe place
(such as your wallet), not in the vehicle. If you lose
your keys, it is recommended that you visit a
NISSAN dealer for ...
Spark plug
Exploded View
1. Ignition coil 2. Spark plug
Removal and Installation
REMOVAL
1. Remove ignition coil.
CAUTION:
Do not drop or shock ignition coil.
2. Remove spark plug using a suitable tool.
Diameter (a) : 14 mm (0.55 in)
CAUTION:
Do not drop or shock spark plug.
INSPECTION AFTER REM ...