Yeah, my iPhone 13 hasn't worked reliably with the Bluetooth in my 2009 Prius for a year or longer. The Prius software is just too old, I think, and I'm not sure there's a way to upgrade.
I had a Prius of that vintage; and as I recall, the onboard infotainment system could be upgraded (both for software and navigation data, IIRC), but it was a something you had to take it into a dealer and pay several hundred dollars for, and there was no proactive notification when there were updates available or what they addressed. I doubt they are still rolling out new updates (but maybe), but even if not it may be possible (though possibly not useful for your problem) to still get whatever the last one was.
i'd think the prius software being old and not upgradable would guarantee that it would work; apple can't have possibly tested their iphone 13 with the models tesla brings out next year, but a 2009 prius ought to be an extremely well characterized platform for their compatibility testing
Well, whether it should be or not, with the iPhone 13 my phone and car simply no longer communicate well. I experience failure to complete calls after repeated attempts, slow connections between phone and car, and other difficulties that I didn't experience with my iPhone 11. I don't have other Bluetooth related difficulties, only with the car.
