Why is there no sound when playing music via Bluetooth connection between the car and phone?
2 Answers
The reasons why there is no sound when playing music via Bluetooth connection between the car and phone include: the volume on the car navigation system or phone is not turned on, the phone's playback protocol is incompatible with the car model's pairing code, or the multimedia music feature of the car's Bluetooth is not enabled. Volume on the car navigation system or phone is not turned on: If the volume is not turned on, naturally there will be no sound. Solution: Go to the phone's "Settings" - "Sound", find the "Media" option, and turn up the "Media" volume. The same applies to the car navigation system; find the sound settings and increase the volume. Phone's playback protocol is incompatible with the car model's pairing code: Some phones (such as iPhones) have music playback protocols that are incompatible with certain car models' pairing codes, so they can only receive calls but not play music. Solution: It is recommended to change the Bluetooth playback frequency band to resolve the issue. Multimedia music feature of the car's Bluetooth is not enabled: Solution: Find the multimedia option on the screen, select Bluetooth music playback, and the sound will appear.
As an enthusiast who enjoys tinkering with in-car technology, I often encounter the frustrating issue of no sound after Bluetooth connection. The most common cause is incorrect Bluetooth settings on the phone, such as muted or lowered media volume; the car audio output source needs to be set to Bluetooth mode, not radio or USB. Some car systems are prone to bugs, failing to pair at startup, or requiring software updates to be compatible with new phone systems. Interference is also common, such as too many nearby wireless devices competing for signals, or unstable car power causing connection drops. I recommend first restarting both the phone and the car's central console, then re-pairing; check the phone's playback status to ensure it's not stuck in headphone mode. If the problem persists, try testing with another phone to see if the system functions normally. For long-term use, regularly updating the car's software can prevent issues before they arise.
