I just bought Honda Accord 2003 EX with only one keyless. I read carefully this thread, but I can't understand how actually is programming procedure.

First, I understand that inside keyless there is a chip, named transponder. This chip has a firmware, which firmware execute algorithm to crypt/decrypt communication between keyless and vehicle computer. Vehicle computer must be trained to know new keyless. This is actually for me programming instruction. Am I right ?

Second, I find appropriate keyless for my Accord from http://www.carandtruckremotes.com/ . They said, that I still visit local Honda dealer to program keyless. What would program Honda dealer ? I ask http://www.carandtruckremotes.com/ , but they don't give me reasonable answer.

For me, the only reasonable answer is that dealers sell keyless without firmware, and Honda dealer must load it. But if this is true, how other dealers test if they keyless works ?

Thanks.

GMailDrive