What is the reason for no sound when Bluetooth is connected to the car?
3 Answers
The reason for no sound when Bluetooth is connected to the car is due to volume, version, or other issues. The specific details are as follows: Volume issues: If the car Bluetooth is connected but there is no sound, it may be because the phone is on silent or the volume is set to zero. It could also be that the navigation system in the car does not have sound enabled or the volume is too low to hear. Version and other issues: Some car Bluetooth systems may still play the last media audio source if the car is not on the Bluetooth media audio playback interface after connection, resulting in no sound when playing music. It is recommended to switch the car to the Bluetooth media audio interface before connecting the phone's Bluetooth. If only the music has no sound, it could also be due to issues with specific versions of certain applications. It is recommended to update all applications to the latest version or try using other applications for comparison.
I've encountered similar situations before. It's really frustrating when Bluetooth connects to the car but there's no sound. The most common issue is that the media volume on the phone isn't turned up. That happened to me last time - the music just wouldn't play after connecting, and I later found out the volume setting in the phone's music app was turned all the way down. Another possibility is the audio output settings in the car's system. Even though Bluetooth is connected, it might still be stuck in radio mode, requiring manual switching to the Bluetooth audio source. Also, don't overlook Bluetooth permission settings. Some cars will ask whether to allow media sharing during connection, and accidentally hitting deny can cause this. For older cars, compatibility issues should be considered. My friend's 2015 car couldn't connect with new phones' LDAC codec and had to switch to standard Bluetooth mode. Finally, a reminder: rebooting both the car system and the phone often solves 90% of weird problems - this old trick works surprisingly well.
Let me, as an experienced driver, tell you that Bluetooth audio issues are mostly volume setting problems. On your phone, make sure three volume settings are correct: call volume, media volume, and ringtone volume - many people trip up on the media volume. In the car, you need to press the audio source switch button. For example, in my car, I have to tap the music symbol on the center console screen to select Bluetooth. Another pitfall is the media audio toggle in Bluetooth settings - Android users need to check that "Media audio" is enabled in the Bluetooth device details. If you can connect but can't play music, it might be a pairing error - deleting and reconnecting usually works best. Also, Bluetooth disconnection during vehicle startup can cause no sound - it's recommended to turn off Bluetooth before shutting down the engine. Trying these methods one by one should solve most issues; if not, you'll need to visit the 4S shop to check the Bluetooth module.
