What Causes No Sound When Playing Music via Bluetooth in Car Navigation?
2 Answers
Car multimedia system volume or phone volume not turned on, programming and pairing codes mismatch, and not selecting Bluetooth audio source can all lead to no sound when playing music via Bluetooth. Multimedia system volume or phone volume not turned on: When the car multimedia system volume or phone volume is not turned on, connecting to Bluetooth for music playback may result in no sound. While playing music, press the phone's volume button to adjust the volume. Set the media volume to maximum, then adjust the car's volume. Programming and pairing codes mismatch: Some phones' music playback programming does not match the car model's pairing codes, allowing only phone calls but not music playback. The Bluetooth playback frequency band needs to be changed. In the phone's Bluetooth settings, check the option [Use Bluetooth for multimedia music playback] to successfully establish a match. Not selecting Bluetooth audio source: When using Bluetooth to play music, the audio source must be set to Bluetooth to play Bluetooth music. You can swipe on the central control display to switch to the Bluetooth music playback interface. If playback still fails after switching, try switching to FM and listen carefully to see if there is sound from the speakers to rule out audio system faults.
As someone who frequently deals with in-car entertainment systems, I've encountered the issue of no sound during Bluetooth connections many times. The possible causes are: first, the phone might not be properly paired—check the Bluetooth settings to ensure the car navigation system is selected as the audio device. Alternatively, the phone volume might have been accidentally turned down or muted, so try manually increasing it while playing music. On the car system side, issues could include the audio output source being mistakenly set to radio or AUX—switch it back to Bluetooth in the menu. If the Bluetooth connection is unstable, restarting both the phone and the car system often helps. Hardware-wise, if the Bluetooth module is aging or experiencing interference, try moving the phone closer. For system software conflicts, updating the firmware or performing a factory reset may resolve the issue. For prevention, regularly clean the interfaces and keep the system updated to reduce occurrences. If the speakers are damaged, get them repaired promptly to avoid affecting driving safety.
