For example, now I'm driving, and I'm connected to the car with my mobile phone. I can listen to songs and navigate, and the navigation prompts me to turn left ahead. How to set the music sound to automatically turn down or turn off at this time? For example, now that I am driving, I am listening to songs and connecting to the car with my mobile phone. The navigation prompts me to turn left ahead. How can I set the music sound to be automatically turned down or turned off at this time? In addition, the function of the left side of the steering wheel remains unchanged. I don't understand what you said. Is the connection Bluetooth or USB? When using mobile navigation, you can't listen to music with usb, but only with Bluetooth. This can be set in the navigation. Take Gaode Map as an example: Open Gaode Map = = Click the account icon in the lower right corner to enter the login/registration interface = = Click the settings icon in the upper right corner to enter the settings interface = = Click the navigation settings = = Auxiliary functions = = There is an item "Control the music volume during voice broadcasting" at the bottom. That's true. Why is the function on my self-adjusting Bluetooth steering wheel useless? Elite Edition has no Bluetooth function @20 19.