Alright, so I just got an '02 B6 a4 and I still have the remote to my totaled a4 B5. Does anyone know if I get the key blade cut the same as my new remote can I use the B5 remote in my B6. The B5 remote only has three buttons, panic, unlock and lock. Whereas my B6 remote has an additional trunk button. I know how to program the remotes I was just wondering if I could save some money by getting a new blade and using that remote as a back-up, if compatible. Any help?

Thanks,
Zach