My 1997 Mercedes S 320, won't start. From beginning, we purchased used four years ago having only one key,and it was stolen. So waiting for new keys from dealer,was told they don't have faub for that year and lucky to have just a key.So Thursday we got our keys they won't control doors or trunk we have to have them retumbled. My poor car was fine when parked it is three weeks later .it wants to start ,turns over and dies ,I'm missing something help please