2002 honda accord se. Replaced battery and radio doesn't want to work. need security code. I have set of numbers for the radio: ccm21113946 pn39101s84a510m1 ref no mn910aa thank you

Check for a sticker with the radio code inside the glove box. Some dealers fixed a second sticker in the owners manual. If not available, get the code from a Honda dealer, and be prepared to show VIN number, and proof of vehicle ownership.

turn the radio on. You should see the word "code". type in the code on the numbered station selector buttons. You should hear a long beep when the code is accepted and the radio should work although it will not have the preset stations in memory like it did before it lost power.

You will need to pull the radio out, and get the serial number, call the dealer and they will give you the code for the radio.

Check for a sticker with the radio code inside the glove box. Some dealers fixed a second sticker in the owners manual. If not available, get the code from a Honda dealer, and be prepared to show VIN number, and proof of vehicle ownership.

yes there is, that code should have been supplied with the owners manual, it is unique to each radio and car serial number, u will need to see the dealer about getting that number from GM

Honda dealership- parts department

What you have is the SERIAL NUMBER. Your almost there!!! The hard part is over! Go to the bottom below for the website option or phone number option you need to get the unlock code!!!

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FREE and EASY methods to get your Honda radio UNLOCK CODE. (Dealerships usually charge)

Assuming you don't have the Anti-Theft Code and Serial Number that is found on the credit card sized Anti-Theft Radio Identification Card that comes with the vehicle at the time of purchase and is usually found in the glove compartment....

You have FREE options to retrieve that code by phone or on the internet BUT, the RADIO SERIAL NUMBER is REQUIRED (no matter what). (see bottom about removing ERROR E3)

***IF your Honda was made BEFORE 2001 the serial number MAY not be accessible without removing the radio from the vehicle.***

* TO GET THE SERIAL NUMBER (so that you can get the unlock code)

1. Get something to write with and on (you'll need it to write down the serial number)
2. Put the ingnition key in and turn it until your able to turn your radio on (accessories position).
3. Then turn your radio OFF by it's knob/button (but leave the ingition key in place).
4. Hold down the preset buttons 1 and 6 at the same time.
5. Turn the radio on while pressing down both the 1 and 6 buttons.(***IF your Honda doesn't have preset buttons on the radio then hold down the top part of the 'Seek/Skip' button AND the top part of the 'Change Disk' button instead.*** )
6. Write down the 4 numbers you see first and then 4 more that display. These eight numbers are the SERIAL NUMBER. This is NOT your CODE.
7. Make sure your VIN (Vehicle Identification Number) is handy to get the unlock code. (can be found on your insurance card, driver's side door jam, small plate on dashboard by registration and inspection stickers, etc)

* TO GET THE UNLOCK CODE (using the radio Serial Number and VIN)

---Internet option:

1. Go to https://radio-navicode.honda.com/ (YES, it's run BY HONDA and IT'S FREE)
2. Follow on screen instructions (Serial Number and VIN required)
3. Type in the 5 digit code into your radio. This will unlock the radio and return it to a functional state.

-OR-

---Telephone option:

1. Call American Honda Customer Relations (800) 999-1009
2. When the automated message starts 'Press 3' for 'Radio and Navigation Codes'.
3. Tell the Customer Service Agent you need your radio code. (They will ask for your name, your radio's serial number, VIN, etc)
4. When they give you your radio unlock code--WRITE IT DOWN and KEEP IT SAFE!
5. Type in the 5 digit code into your radio. This will unlock the radio and return it to a functional state.

* REMOVING ERROR E3

****If you entered too many wrong codes and got an ERROR E3 message displaying you'll need to do an additional step for even the correct unlock code to work.****

Disconnect your negative battery terminal (or pull the radio fuse out if that's easier for you) for 30 seconds then reconnect it and then the radio will say "CODE" again and you can put in your correct unlock code.

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So what happened to begin with?
See also: http://automobiles.honda.com/information/frequently-asked-questions.aspx?Question=2

If the power from your battery to the Honda radio is interrupted the Anti-Theft feature kicks in, the radio is rendered inoperable and the screen reads 'CODE'. You must enter in the Anti-Theft Radio Unlock Code (usually 5 digits) to make it operational again. You know that much by now.

When I got my 2002 Accord SE, the sales lady put the radio code on the first page of my owners manual. There are 5 numbers in the code. They have this so if someone steals your radio they won't be able to use it..
Art in D town

Is that the original radio to your car? If so call the Honda customer service 1800-999-1009 and tell them what you need and they will help you out. They will ask you some questions, but it will be worth it to get your radio code. Have your VIN number to your car and the serial # number to your radio because they will ask you for it.

Pull your radio out and look on the back for your radio serial number and then call Honda with that code and they will give it to you.