Exactly what I wa sthinking cass. Someone could just come with the spare key and take the car right away!!
I would strongly advise recoding the system if you havent got both keys.........then again, would it be a good idea to recode anyway?? I mean, if you purchase from a private seller, if would be much safer to recode the keys since you dont know how if any others were made and coded before you took the vehicle!!
Maybe thats taking it a little too far - but you never know in todays world!
How much are you looking at to get the keys recoded, and what does the process involve?