Serial Number Display Mode

To obtain the audio unit serial number on a vehicle, do the following:

NOTE:

This procedure can only be performed when the battery power is disconnected from the audio unit and the audio unit displays CODE.
To obtain the navigation unit serial number, refer to ECU INFO . in the navigation system diagnostic mode (see UNIT CHECK (QUICK CHECK) ).

Turn the ignition switch to ON (II).
Make sure the audio system is turned off.
Push and hold the preset No. 1 and No. 6 buttons.
While holding the buttons, push the VOL PUSH PWR knob (A) to ON.
Release the buttons and the self-diagnostic begins.

Fig 1: Pushing VOL PUSH PWR Knob
Courtesy of AMERICAN HONDA MOTOR CO., INC.
The display shows a 8 digit serial number.
Eight digits of the serial number (example 12345678)

Fig 2: Audio Unit Display - Eight Digits Of Serial Number
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Use all 8 numbers as the serial number when using the Interactive Network (iN) to retrieve the 5 digit anti-theft code.
To end the self-diagnostic function, turn the audio unit off, or turn the ignition switch to LOCK (0).