I posted this a while ago in the other key fob thread but here you go:
ok here is how it works.
When you order a key you must present your license and your vin (have to match obv) you DO NOT need to have the vehicle present. Then the dealer orders the key from BMW which comes ALREADY programmed to that specific vehicle. which then is handed to the customer. You can not buy a key that is un programmed.
Now as far as making it work on other cars. The keys are somehow (I dont know how) unable to be re programmed to any other vehicle once its cut form BMW.
hope that helps
Now you may be able to crack the fob open and take the guts and place them in the f8x fob and glue the key back closed but then again I bet the guts are a different size etc.. and would be a huge hassle IMO
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