My CPO CX-90 came with both key fobs, but only one had the manual key inside. I know you can get it at the dealer, but they charge too much. I've seen blanks for these online. Since they only open the doors (in emergencies) is this something you can just get copied on your own for cheap?

 

The obvious answer is to contact local Lock Smiths in your area and ask and or find one that can make a duplicate key for you.