Android Auto. How to play the radio whilst using Google maps?

[ChrisKe]

Android Auto. How to play the radio whilst using Google maps?

I know this works because sometimes I switch to Android Auto and it does this be default but I can't see how to make it happen if I already have media playing

Any ideas?

[GiveMeABreak]

Can't speak for AA, but it's not an issue on CarPlay - I just select radio on the Head Unit and it plays and remains playing until I select another source like the Secondary USB for Music files, or switching to CarPlay. The radio or Music files on USB still play even when using CarPlay navigation. The only time the original source cuts off is when I choose Apple Music within CarPlay as it should - but I just go back to source via the hard button or 3 finger press on screen and select the Head Unit source again as needed.

So I can't ascertain from your post what your situation is, as "see how to make it happen if I already have media playing" doesn't tell me what media and from where? - Media on the Head Unit or the Phone?