more or less the same problem here. 2014 BMW. After updating iOS to 16.4.1 on iPhone 11 Pro max, the bluetooth car audio stopped working. The phone calls work fine thou.
Bluetooth connects ok. The calls work well, the contact list syncs as well. It's just the audio/media that doesn't work at all. On BMW iDrive Media, it says that no Bluetooth is connected, despeite of being connected and the Phone Menu shows the phone and I can make and receive call on the car system.
Please fix this ASAP.
Thanks