Here is a link to Apple Car Keys a feature that will be added to CarPlay. Looks to me like it rides along on the "myVW" app once linked to CarPlay. It's supposed to allow locking and unlocking the ID.4 using an iPhone as well as sending someone your "keys" via a text message. The Apple video on the page linked below shows the details. I wonder when this might start working. I guess it's a couple of generations of software away for
vw.
support.apple.com
vw.
Add your car key to Apple Wallet on your iPhone or Apple Watch - Apple Support
You can add your car key to the Wallet app, and use your iPhone or Apple Watch to lock, unlock, and start your car.