By the way, you have to open your original key & get all the info from the inside-model #, FCC #, etc...eBay should have the tech. stuff info for you to buy the right one. Match up as many numbers as you can to insure you don't buy the wrong fob. The Maserati dealership I took my replacement fob (Scottsdale, AZ.) told me If they program it & it doesn't work... I'm S.O.L., so double & triple check the numbers to get the right one. They charged me $250 to program, & $67 for the fob on eBay. Also, look up on you tube; there's a video or two about how to change the battery- that will help getting it open without breaking it... I think that's where I got this info originally. Good luck.