Hi applemax,
Thanks for reaching out in Apple Support Communities. I understand you're having trouble using Apple Music when you're connected to CarPlay on your iPhone. I also see that a different iPhone works as expected with CarPlay and Apple Music, and that you've tried reinstalling the Music app and using a different USB port. I appreciate you including those details, they're most helpful. I know how important it is to use all of the iPhone features compatible with CarPlay; I'd like to help. I'd recommend following the steps below and testing for the behavior after each:
If CarPlay doesn't work like you expect, make sure that your iPhone has the latest version of iOS. After your iPhone is updated, follow these steps—checking CarPlay after each step:
- If CarPlay doesn't activate automatically, look for the CarPlay logo on your car's display.
- Restart your iPhone and your car.
- Make sure that Siri is on.
- If your iPhone isn't detected by CarPlay, make sure that CarPlay isn't restricted. Go to Settings > Screen Time > Content & Privacy Restrictions, tap Allowed Apps and make sure that CarPlay is enabled.
- Go to Settings > General > CarPlay, and tap Forget This Car.
- Check your connection:
- If you have a wired connection, try connecting again with a different USB cable to a different USB port if you have one.
- If you have a wireless connection, enable AirPlane Mode by going to Settings > Airplane Mode. Don't enable Airplane Mode from Control Center.
- If needed, install firmware updates. Check your car's manual for more information.
If you still have issues connecting to CarPlay, contact Apple Support."
How to use CarPlay with your iPhone
Best Regards.