BMW Bluetooth Connection Successful but No Sound When Playing Music - What to Do?
2 Answers
Turn the phone volume to the maximum level, and in the phone's 'Sound' options, adjust both 'Media Volume' and 'Call Volume' to the highest setting. Adjust the car's Bluetooth volume knob to check if there is any sound. Turn off the car's Bluetooth switch, then turn it back on and reconnect with the phone's Bluetooth. If there is still no sound, perform a factory reset.
I've discussed similar issues in the BMW owner group and found that Bluetooth connection without sound is quite common. Causes include the phone or vehicle volume setting being too low, the phone being muted and forgotten to turn on, or the BMW iDrive system not selecting the correct media source as Bluetooth audio input. It's recommended to first pick up your phone and turn up the volume button, then check the car's central control knob by turning it up a few times to confirm sound output. Next, go into the vehicle settings, navigate to the audio source option, and switch it to your connected device. If it still doesn't work, restart both your phone and the car's system—the method to restart BMW's iDrive is to press the volume button and navigation button simultaneously for a few seconds. Bluetooth protocol version compatibility is also crucial; ensure both your phone's system and the car's software are updated to the latest version. If all steps fail, the internal Bluetooth module might be damaged or there could be wiring issues. In this case, you'll need to visit a 4S shop for professional diagnostic tools—avoid dismantling it yourself to prevent further problems.