How to Obtain the Audio Unit Serial Number
WARNING: This page is about a different car, the 2009 Acura MDX, 2008 Acura MDX, and 2007 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
This procedure can only be done when the power has been disconnected from the audio unit, and the audio unit displays CODE.
With the audio unit switched off, push and hold the preset buttons No. 1, No. 6 and the VOL PUSH PWR knob.
The audio unit will display the letter and the eight digits of the serial number (example 12345678). Use all eight digits as the serial number when using the iN (interactive network) to get the 5 digit anti-theft code.