With the latest release of iOS17.1, the "Hey Siri" or "Siri" feature does not work with Apple Car Play. Even with taking multiple mitigation steps to try and alleviate the issue (turning on and off the phone, turning off the phone Wi-Fi and Bluetooth, disconnecting the phone from the vehicle, turning the vehicle on and off, etc.), nothing seems to work.
There will need to be an updated release to patch that current bug which worked in iOS 17.
I have tried everything to get Apple Carplay to work after IOS 17.1. New cable, resetting my infotainment and all other recommendations that I found online. Nothing works. Fix this Apple!!!