Hi! I am having the same issue on my Audi A4. I have tried everything. I am here to see what responses you get!! I also just posted a thread.
I tried connecting my 2017 Audi A4 to my AppleCarPlay as I normal have a million times before. This time my A4 would not even show CarPlay as an option anymore and I strongly believe it was right after I installed the 16.6 update. At first I thought the USB port broke in my car, so I took it to the Audi dealership for them to tell me it was not broken. I have called Apple and they can't seem to figure it out. I kept mentioning it only started the last week of July when I updated my phone. I have also called Audi and they confirm it is nothing with my car. I have tried everything 500 times and no luck.
I have tried:
- Confirmed with dealership USB port was working correctly
- Confirmed with dealership all of the software was updated on my car
- Purchased several Apple Certified lightening cable from the Apple Store
- Reset the network on my phone
- Completely deleted my phone back to factory settings and restored from a backup
- Deleted CarPlay from my Car/Phone and started over from scratch
- Checked the Screen Time/Content Privacy Restrictions
- Confirmed car's infotainment system menu was enabled
- Sent in a video / photo to Apple Help Desk showing it is not registering my phone, but will allow ApplePlay from any other phone that is not on 16.6
PLEASE HELP! I use Google Maps daily and it is really annoying to not be able to use. I have reached out to Apple and haven't gotten any solutions. I have searched the internet and found others having the same issue but when I talk to Apple Support they tell me they didn't even know this issue was going on :/ I don't know how because it's all over the Apple Community Threads!!!
https://drfone.wondershare.com/ios-16/fix-carplay-not-working-in-ios-16-issue.html
https://www.howtoisolve.com/carplay-not-working-ios-with-iphone-not-connecting/