I'm glad I read this post (and my owner's manual). Luckily, the previous owner of my vehicle gave me the code card with everything else. I just had to find it.

Oddly, I had a related problem that still needs to be resolved. When the vehicle was in for its 40K-mile tune-up, they replaced a Multiplex Integrated Control Unit under the dash. About a week later, the lights on my radio's display dimmed considerably. After fumbling around for a dial to adjust it and realizing there isn't one, I tried the fuses. That's when the radio turned off altogether and prompted me for a code. Has anyone had a similar problem?

Thanks.

 

I have a 2003 honda accord and unplugged the battery. I put the code in and the navigation works but the radio will not come on. Any ideas how to fix?

 

Your car probably has both a separate radio code and a navigation code. You may be able to retrieve on-line or calling.

"https://radio-navicode.honda.com/"

 

I have 2 codes but it wont let me enter another code. Is there a step I am missing?

 

For your system, use the TUNE **** to enter the code (see attached) for the audio system.