What is the reason for no sound when playing music via Bluetooth connection in Audi Q3?

[DelIsla]

First, the car owner needs to check whether the Bluetooth connection is properly established on either the mobile phone or the car's system. If the Bluetooth connection appears to be fine, try reconnecting several times. Here are the relevant precautions: 1. Establish a pairing relationship between devices: Enable the Bluetooth function on both the mobile phone and the car's Bluetooth device, and set the mobile phone Bluetooth to "Visible to All" in the settings; search for Bluetooth devices on the mobile phone, select the device once found, and pair using the password: 0000. The connection is successful once pairing is completed. 2. Function: After successfully pairing and connecting the car's Bluetooth with the mobile phone's Bluetooth, you can make and receive calls; play music on the mobile phone, and enjoy it through the car's Bluetooth device.