I'm testing iOS 27 and face this issue that the accessoryImage on the CPListItem is no longer shown properly. It works fine up until iOS 26.5 but on 27 it is way to small. Check attached screen shot for details. Also filed FB23903072, hope this gets fixed before iOS 27 final arrives. 🤞
CarPlay CPListItem.accessoryImage display incorrectly on IOS 27 beta 4
putting an image of a switch is not an explicitly supported use case, but we will follow up in your bug report