You got in your car and connected your phone to your car via USB cable as usual, you wanted to turn on Android Auto. But you are getting connection error. So, why does this occur? From the phone, from the USB cable, from the connector? These questions now have a clear answer.
The latest Android Auto update brings a kind of innovation that will eliminate a problem that we all experience from time to time. The latest update, which added a new tool called USB Startup Diagnostics, clearly tells where the problem originates in such cases.
The tool, which checks whether the USB cable is connected when you start the application, the correctness of the connected cable and the status of the cable quality, is currently available in Android Auto 7.5.121104. After updating the application, you can access this section by using Android Auto > Connection Assistance > USB Startup Diagnostics.