It's possible that the diagnostic tool can help you figure out if the USB connection is the problem with your phone's connection to your car.

If your USB cable or port isn't working as expected, the latest Android Auto update includes a diagnostic feature, as demonstrated by former XDA Developers editor-in-chief Mishaal Rahman on Twitter. It's possible that the diagnostic tool can help you figure out if the USB connection is the problem with your phone's connection to your car.

According to Rahman's images, the tool, which appears to be called "USB Startup Diagnostics," checks to see if a USB cable is connected and the quality of the cable. A cable that is less than three feet long and doesn't "use USB hubs or cable extensions" is recommended by Google on a support page for connecting your phone to your car.

Choosing the correct cable, on the other hand, maybe more difficult. Because USB cables come in such a wide range of quality, it can be difficult to determine which ones are compatible with Android Auto.

It's possible that the cable that came with your phone won't work with Android Auto because many newer phones have USB-C cables, but not all cars have USB-C ports. It is hoped that this diagnostic tool will assist you in determining whether or not you require a new cable.

According to Rahman, the tool is included in Android Auto version 7.5.121104. If you don't have that version, you might want to see if there is an update available. As Rahman pointed out in a direct message on Twitter, if you have the feature enabled, it can be found under Android Auto's settings > Connection help > USB startup diagnostics (if you have the feature enabled). Because Google prefers to roll out new features gradually, it may take some time for the diagnostic tool to appear for some users.