Anti-theft Feature The navigation system and audio unit have a coded theft protection circuit. Be sure to get the customer's anti-theft security codes number before;

- disconnecting the battery.
- disconnecting the navigation unit 8P connector.
- removing the No. 7 (10 A) fuse from the under-dash fuse/relay box.

After service, reconnect power to the navigation unit, and turn the ignition switch ON (II). Enter the 4-digit anti-theft security code, then select ‘‘Done''.
If the code cannot be found, use the interactive Network ( i N) to look it up. You will need the serial number from the navigation unit in the trunk. It is on a label on the underside of the unit. Alternatively, you can view the serial number in the Navi ECU diagnostic screen.
When replacing the navigation unit, be sure to give the customer the new anti-theft security code.