I have a 2005 TSX w/o seat memory. Will a TSX remote that has seat memory 1 or 2 work with my car? All the codes on the remote match except for the seat memory.

 

There's a ton and a half of threads on this topic.

Short answer is yes, you have to unlink the seats. The instructions to do so are printed on the remote itself.

And programming instructions for the remote itself are on the site, just search for it.