Hello SteveJasi,
Thank you for using Apple Support Communities! I understand that you're experiencing connection issues when using CarPlay with your iPhone and 2019 VW Jetta GLI. I would be happy to help provide steps to take to help get this feature working again.
There's been some bug fixes and improvements for features such as CarPlay, and where Bluetooth may disconnect on certain vehicles, so I'd like to start by ensuring that you've updated your iPhone to the latest iOS:
Update your iPhone, iPad, or iPod touch
About iOS 13 Updates
If this happens on the latest iOS, try these steps next:
How to use CarPlay with your iPhone
"Get help
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."
Take care.