audio security code
 

I have a 2003 CR-V. I replaced the battery a couple of days ago, and as I
expected, the radio is asking for the security code. I bought the vehicle
used from the local Honda dealer a couple of years ago. There is a five
digit number written on the back of the manual that I have always thought
must be the audio security code. But when I started to enter it, I noticed
that a couple of the digits are higher than 6. There are only 6 preset
buttons. Does this mean that the numbers on the manual aren't the security
code, or does it mean that I'm just not smart enough to enter a number
greater than 6? Any help will be appreciated. I have the serial number for
the radio, I think.

Thanks