if you have a clock in your radio, it will need the code to install to reset the clock. Check in your glove box or paperwork on car purchase if there is a small 2/3 card with the radio colde to reset the radio. If you do not have this, call your honda dealer and ask them if they might have the code. If they do not wish to give it to you, and you have to drive down to Honda. Make sure you write the name of the person you are talking to , and get the info needed to set your radio, and get that reset code. You may have to present proof of ownership of you car.