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
Cold weather driving
Freeing a frozen door lock
To prevent a door lock from freezing, apply deicer
through the key hole. If the lock becomes
frozen, heat the key before inserting it into the key
hole, or use the remote keyless entry key fob or
the NISSAN Intelligent Key.
Antifreeze
In the winter when it is antic ...
P0731 1GR Incorrect ratio
Description
This malfunction is detected when the A/T does not shift into 1GR position as
instructed by TCM. This is not
only caused by electrical malfunction (circuits open or shorted) but by
mechanical malfunction such as control
valve sticking, improper solenoid valve operation, etc.
DTC ...