You need to go to the dealer for a key. I tried the programming of a cheap key. ended up having to replace the security module at the dealers after having the car flatbedded in and then we bought a dealer key.
If you do a search for BRICKED you'll get the whole story.

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2021 X5 xDrive40i
2015 X5 xDrive35i MSport
(Traded) 2013 X5 xDrive35i