I've been reading a lot of discussion regarding the keys of Ferraris. I thought it would be a good idea to start this thread since I couldn't find the answer searching. I have two sets of keys with remotes for my '98 355 with alarm. One remote is the red and one remote is the black. I have read that the remotes are expensive to replace. Is that both of them or just the red one? Can you replace the battery in these and it will hold the codes? What is the difference between the red and black? Anyone want to post informative key info?