Why is there no sound when connecting Bluetooth music in a BMW?
2 Answers
BMW connecting to Bluetooth music without sound may be caused by the central control or the phone being in a frozen state. You can try restarting the relevant devices and then reconnecting. If the problem persists, it is necessary to go to a 4S store for troubleshooting. The following is a related introduction about car Bluetooth: 1. Working principle: Car Bluetooth technology is an extension of mobile phone Bluetooth technology, designed and developed based on wireless Bluetooth technology as an in-car wireless hands-free system. The Bluetooth core specification provides connections between two or more micro networks to form a distributed network, allowing specific devices to automatically and simultaneously play the roles of master and slave in these micro networks. 2. Precautions: When using car Bluetooth for the first time, it is necessary to establish a connection first. A Bluetooth master device can communicate with up to seven devices in a micro network (a temporary computer network using Bluetooth technology), but not all devices can reach this maximum capacity.
I've been driving a BMW X3 for several years. Once, the Bluetooth connection to my phone for music suddenly had no sound. After struggling for a while, I found out it was a settings issue. In the iDrive system, the multimedia source was forgotten to switch to Bluetooth audio, only AUX or USB was selected. Additionally, the phone volume being too low or accidentally pressing the car's mute button can also cause no sound. The simplest solution is to restart both the car and phone systems to clear the cache. Or try unpairing and then reconnecting the device. Sometimes it's due to software bugs; after a BMW system update, compatibility issues may arise, requiring a firmware update at the dealership. Bluetooth signals are prone to interference, so it's recommended to operate while parked, not checking while distracted on the highway. Regularly keep phone apps updated to reduce the chance of minor malfunctions. In short, safety first—don't rush to fix it yourself.
