Android Auto established a connection between your phone and the on-board equipment. The on-board equipment in the car needs to support Android Auto. Please check with your vehicle service provider for device compatibility.
Go to Settings> Connected Devices> Connection Preferences> Android Auto, connect to the car via USB cable.
1. Turn on USB debugging by inputting *#*#3424#*#* on the dial pad.
2. Allow popup requests on your phone.
For most compatible car or aftermarket stereos, simply plug into your phone with a USB cable. If your car's display supports wireless connectivity, you must pair your phone with your car's Bluetooth to set it up. Once set up, depending on your car, the phone will automatically connect or the Android Auto app icon will appear on your car's display.
Kind tips:
1. If your phone is charging after a connection attempt and the connection can't be established, replace the USB data cable to reconnect to the car. Alternatively, restart your phone to reconnect.
2. Check if the built-in software of the car projection screen is the latest version and upgrade the Android Auto on your phone to the latest version in the Google Play Store