You can disable Android Auto from the SYNC 3 screen.
To disable Android Auto, press the Settings icon in the Feature Bar, then press the Android Auto Preferences icon (you may need to swipe the touchscreen to the left to see it), and select the smartphone you want to disable.
How do I turn off auto on Android?
Setting auto power off (Android device)
Tap (Settings) on the file/folder list screen. Tap [Power management]. Tap the button displayed to the right of [Power off timer]. [Disabled] is selected by default. Select the time you want the power of this unit to automatically turn off, and tap it. Disabled: This function is not used.
How do I stop my android from automatically turning on Do Not Disturb?
Stop interruptions automatically
Open your device’s Settings app. Tap Sound Do Not Disturb Turn on automatically. Note: If you see “Do Not Disturb preferences” instead, you’re using an older Android version. Tap a rule. Edit your rule’s name, status, and alarm override. At the top, check that your rule is turned on.
How do I turn off auto notifications on Android?
To configure how Android Auto works, tap the menu button, then Settings. You can enable or disable “OK Google” detection from here too, turn off notifications while you’re driving (highly recommended), and write out an auto-reply message that will ping back as an automatic response to any incoming texts. If you want to eexplore more options then you can read this complete guide How to Turn Off or Disable Android Auto.