Hi, if this can help I have some feedback as a Lexus user from Italy.
• IS300H from2017
• of course everything work well before 13.0 (handsfree, connected services, music via bluetooth and so on) all was prefect;
• after iOs13.1.2 I cannot more listen the music via multimedia system: phione connect, I can see the cover, and so on, but not sound at all;
• contact transfer work fine with iOS 13.1.2;
• handsfree is working but disconnect sometimes: I have to tested more;
• connected services use the hot-spot and data so no problem at the moment: but with 13.1.1 it was impossible to connect with the service and a message appear on the screen of the Lexus multimedia system asking to contatc lexusportal.eu (that is dicountinued!) for an "update".
Lexus, contacted, doesn't know nothing about it (but this is usual: customer care from Lexus Italy had no totally idea on how their system work!)
Anyway with iOS13.1.2 it seems the message disappear and the connected service started to work again;
I am no confident to repairing via BT the phone with the car, to avoid any mess, because I prefer the connected service work instead the music: connected services are very useful and important, so I wait is some more update can come (by the way as a Apple user since 1989 I never seen so many updates in a week!)
If you are a Lexus user and what to share any new issue please, I hope you can add some info to the discussion.
Thank you for your attention.