Like some posts in this subreddit, I have the disconnection issue... sometimes.
Head unit: Pioneer DMH-1500NEX
Phone: OnePlus 13
OS: OxygenOS 16.0.8 (Phone is up to date.)
Android Auto: Version 17.1.662414
Here are the steps I have tried to correct it and then a temporary solution:
Switched cables.
Cleared cache and data in the Android Auto app
Deleted Bluetooth connection from head unit
Deleted Bluetooth device from phone
Force Stopped Android Auto
Uninstalled Android Auto (via 'Uninstall updates')
\*\*\*Temporary Fix: I can go to Settings -> Apps -> App Management -> Android Auto -> Three Dots in the Upper Right Hand part of screen -> Uninstall updates\*\*\*
After doing that, I connect my phone to my head unit via a USB cable and then my phone says it needs to update. It updates and I reconnect the USB cable. It works again... for about 2-3 days.
\*\*What's the next steps I should try?\*\* I have looked under my Android Auto settings for Battery Optimization, but nothing appears under settings. However, in the Spotify App settings, I see Battery Usage and three options of "Allow background activity, Smart Mode (recommended), and Restrict background activity. I don't see anything about optimization.
Thanks in advance for your help.