I had ability to like songs, open playlists, even filter search results (kind of funky and buggy, trying to figure out a work around here). Before, whenever this was done you would select YT Music and the whole app would crash or give you an error message. I then re-checked the box to show YT Music in the launcher IN Android Auto and then poof YT Music was now finally working in Android Auto. I added a widget for YT Music on its own page all the way at the top assuming that maybe Android Auto could pull from the widget and operate the widget as if it was the app. I had it unchecked at this time due to the reason listed in reason 3.) (You can do this by checking or unchecking checkboxes for which app shows up and which one doesn't. YT Music at this time was REMOVED from the android auto launcher. It's a bit buggy but, if you play YT Music before getting into the car, the app refreshes and it will see it and you can operate all from android auto just fine. I downloaded anyautoaudio to play YT Music and it works. I'll kind of list what I ended up doing in order and I'll throw some things here and there.

I have a hunch but, I do not want to mess something up and lose this capability. To be quite honest I have no clue how I got this to work. The original Youtube app and Youtube music from Google is either uninstalled or disabled on my phone. (VANCED manager is not allowed to draw over other apps.) YT Music : 3.86.51 (all permissions enabled and allows it to draw over other apps. These are the apps I am using and their version numbers: I'm using legit apps from legit devs from XDA. I am not using some random unofficial app. I can provide screenshots on Android auto of YT Music WORKING. I do not know if the following will work for you guys or not. As many people here know, I have tried everything to get YT Music (Youtube Music VANCED Edition) to work on Android Auto.

Youtube music vanced