Are there any GT users here? Is anyone else having issues with Siri on CarPlay? Mine seems to activate on its own. I tried restarting everything but had no luck.
You need to update your software; the systems work smoothly if they are compatible. It has to find its perfect match all the time. Just make sure it is updated, I am quite sure it will work fine.
Is yours updated? I make sure that I keep mine up to date to avoid any of these issues popping up. Did you also talk to your dealer about the best course of action for this issue?