Why is there no sound after successfully connecting Bluetooth in Chevrolet Cruze?

[RobertAnn]

When the car's multimedia system volume or mobile phone volume is not turned on, there may be no sound when playing music via Bluetooth connection. Here is some extended information about car Bluetooth: 1. Function: During normal driving, Bluetooth technology connects to the phone for hands-free calls, freeing both hands and reducing the risk of traffic accidents. Car Bluetooth can automatically recognize mobile phones without the need for cables or phone holders, allowing the owner to control the phone without touching it, even keeping both hands on the steering wheel, and use voice commands to answer or make calls. 2. Introduction: Bluetooth technology is an open global standard for wireless data and voice communication. Its essence is to establish a common radio air interface for communication environments between fixed or mobile devices, further integrating communication technology with computer technology, enabling various 3C devices to communicate or operate with each other over short distances without wired or cable connections.