voice activation

I would like to get in my car, speak the audiobook or podcast I wish to listen to and have it begin on my car speakers just from voice activation. Also, switch to a different podcast or skip by the same method while I'm driving. I have old Toyotas with outdated speakers right now. I imagine...

Difficulty w/ voice commands 2009 Pioneer AVIC Z110BT I have the 2.5mm blue tooth microphone plugged in. 1.press the mute button. 2.talk into the mic. Example play artist such & such. Sometimes the pac man w/ speech example comes on screen now it’s not appearing on screen...