I've been trying to read up about the factory keyless entry system. ive been reading up and from my understanding of things either part of or the entire keyless entry is built into the factory radio? i have a 02 LX that came with a factory tape deck. but i found, bought, and installed a factory cd player off of a guy on craigslist out of an ex. I dont know weather this is a dumb question 
or not but if i got a remote programed to the radio or whatever, would i have a keyless entry or do i have to buy something else to add on as well?
or not but if i got a remote programed to the radio or whatever, would i have a keyless entry or do i have to buy something else to add on as well?