Originally Posted by 98CoupeV6
If you transplant the transponder from the 02 into the 03 it will work. As far as i know the transponders are different and the keyless entry receiver will not accept it. There are about 30 different Honda remotes and none of them are interchangeable with each other that I've ever heard of.
My understanding is the "chip" only effects the ingnition not the lock controls.
The above Accord '03 remote-hybrid key works just fine in our '04 TSX. I have a second key being made for the '00 Accord as well.