I don't know what changed, but the voice response is either missing or muted. When I say, "Play some music," I'm expecting a "Sure. You want to play some music." Instead, I get nothing. After a few seconds, I get a "bee-doo" of the voice command turning off, but I never hear her sweet, sweet voice. It seems like it's muted, because if I ask for something with a longer response (e.g. "Tell me about albums by The Who."), there's a longer silence before the "bee-doo." I've looked at the head unit (AVIC 8100-NEX) volume, the phone (Nexus 6P) volume, etc., but I can't find anything that looks wrong. Anyone else having this issue? Any ideas where to start looking for a solution?