i have 2 broken remotes for my 00 A6 4.2 (broke my one good one changing the batteries) Is it possible to order new keys from ebay or wherever and program them to work properly on my car? i have read the different ways of programming the keys to work with your car but was wondering if the FCC id #s and part numbers had to match fully or if i could buy a newer style audi key fob and program that to work? thanks for any help in advance.