A followup comment to my own post: The easiest way to adjust Waze CarPlay Navigation volume that I have found is to poke the microphone icon to start a voice command, then say "help". This gets a brief verbal prompt and stays in the voice command mode (so just say "help" again to get Waze to talk some more).
A followup comment to my own post: The easiest way to adjust Waze CarPlay Navigation volume that I have found is to poke the microphone icon to start a voice command, then say "help". This gets a brief verbal prompt and stays in the voice command mode (so just say "help" again to get Waze to talk some more).