Why is only one speaker working when playing music via Bluetooth in a BMW?
2 Answers
When playing music via Bluetooth in a BMW, only one speaker working could be due to a speaker malfunction or a Bluetooth module issue. Insufficient battery power: Check the output voltage of the magneto and whether the battery has sufficient charge. If the horn sounds hoarse when the horn button is pressed, it indicates insufficient battery charge. Speaker malfunction: When the power supply is normal, remove the horn's live wire and test for a spark by touching it to the ground. If there is no spark, the issue lies between the horn button and the terminal block; if there is a spark, the problem is with the horn itself. Horn contact burn or poor contact: This could be caused by burnt or poorly connected horn contacts, damaged vibration diaphragms, or incorrect adjustment of the working gap between the vibration plate and the vibration diaphragm. Note: Be extremely careful when checking the circuit to avoid unnecessary short circuits that could damage the wiring.
I've been driving a BMW for several years and occasionally encounter the issue where only one speaker plays music via Bluetooth. This is usually due to imbalanced volume settings, such as uneven left and right audio channel settings on the phone or adjustments made to the balance knob in the car's iDrive system. It could also be caused by unstable Bluetooth connections, where weather changes or nearby interference sources might affect signal transmission. I recommend first checking these settings, trying to restart both the phone and the car's infotainment system, and testing with different songs. If it's a hardware issue, like a broken speaker or aging wiring, it's a bit more troublesome and requires professional repair. Safety first—uneven music while driving can distract you and increase risks. Regular maintenance of the audio system can help reduce such issues.
