If your battery dies in your car and your Radio no longer works because it prompts for a security code "and you dont have the code", write down your Vin #, open your glove box and write down the number, call Honda of America and choose option #5, give them your info and your name/number and within 5 mins they will give you the security code. Much easier then tearing out your radio for the SN of the radio and much cheaper then bringing it to a dealer and having them charge you $100 to get the code for you!