CarPlay iPhone not Recognized.
I have a 2016 VW Golf (I specifically waited for the 2016 for CarPlay, and paid a premium over the 2015 which is essentially the same car). About two times a week, It simply will not recognize the iPhone (5s, 9.0.2). I am using an official known good Apple cable. 80% of the time it works (albeit with some annoying buggy behaviors that I assume will get fixed at some point, but that's another post) But sometimes, like today, I plug the phone in and I get the "reading USB device" message, and nothing happens. I disconnect and reconnect, nothing happens. I reboot the phone, no go. I reboot the head unit by holding the power button for 30 seconds, and that doesn't work either. Rebooting both devices and trying again - same.
I've had the car in to VW - they see no issues, and there are no software updated for MIB II.
I have no way to determine what the issue is. It's always done this since 8.0.3.
How do I get this to work reliably? How do I even begin to figure out where the problem actually is?
Extremely frustrating.