There’s a guy off Instagram that recently upgraded my buddy and my diamond keys to the newer style keys with switch blade. We did a few so he gave us a discount otherwise I think he charges 100 a key shipped. You do have to send your ews module with your current key though.

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Current
2006 BMW X5 4.8is Dinan S2 Black on Black

Retired
2004 BMW X5 4.8is Black on Cream
2001 Bmw X5 3.0
2006 Bmw 530i
1996 Bmw 328is
1994 Toyota Landcruiser
1989 Bmw 535i