I have a 2015 Lexus nx200t that doesn't have the navigation system. No big deal I thought, I will just use Google maps. Problem is that when I use Google maps, I can't hear the voice. I've been through all the settings several times to make sure I wasn't missing something on both my android and my car, Anyone have any suggestions? I've also unpaired and re-paired my phone,

 

What works for me is to go to another audio source and then back to Bluetooth audio. Not the greatest ability of the system for me to listen to the radio and get voice prompts.

 

You either have to set the radio to bluetooth audio or go into the Google map settings and change it to have the nav voice only play from the phone.