I just checked my dev settings, USB debugging is turned off. My developer options are as follows:
Stay awake - Off
Enable BT HCI snoop log - disabled
Picture color mode - Use sRGB
Webview Implementation - Android System WebView
Auto Update - On
USB Debugging, Wireless debugging, Disable adb auth, 3GPP AT commands, bug report shortcut, verbose bedor logging, force full GNSS, Enable view attribute inspection - all off
Verify bytocode is on
Logger buffer sizes - 4M per log buffer
everything else in that catagory is turned off
I have Wi-Fi Scan Throttling turned on
Tethering hardward accelaration is on too
that's all that's turned on.
I think the USB debugging might have been it. What I would do is delete the phone off of the car system, plug your USB in and set it up again. I went weeks without my phone connecting wirelessly and man it drove me nuts lol