Let me guess. You are on iOS11 or higher?

https://xoutpost.com/bmw-sav-forums/...-thoughts.html

The plot thickens.

Do you have a friend with a Android phone nearby?
Try have him/her connect with that and see if that works.

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2007 E70 4.8i Sport
2004 E53 4.4i Sport - R.I.P.