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For my car, it was included in the car manual. They recommended that we don't put it in the glove compartment because the codes were supposed to be a theft deterrent.

Randy,

It should be a 4 digit code, not 5.

I remember reading that Honda has a website where you can get your code if you put your VIN nunber in... I think I found it:
...

Hi, I was able to resolve the problem a few days ago.

When you turn on the car it will ask for a code. Put in your NAV system code.

Once it accepts, press the left dial to turn on your radio....

Hi, were you ever able to resolve this? I'm having the same problem as well.