Just an update. It fixed itself when I started the car this morning, to go to the dealer 🙄. I told the dealer about it, and they did note a fault on the 'central module' when they scanned the key. They would have needed to keep the car all afternoon to look at it, and since there were no loaners and I have stuff to do today, it'll have to wait until I get back to my home dealer in AZ (currently in Vegas).
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2007 X3
2022 M3 Base
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