What causes the rear speakers in the 2021 Boyue to have no sound?
3 Answers
Rear speakers having no sound can be caused by poor sealing leading to moisture exposure, poor contact at the electromagnetic coil terminals, or burnt speaker contacts. Regular maintenance and dust cleaning of the speakers are essential to ensure the normal operation of the car audio system. Poor sealing leading to moisture exposure: Although the interior of the speaker is sealed, if the sealing is not tight, moisture can enter during car washing or water vapor can accumulate in the internal space. This moisture can easily cause the contacts to become damp and fail to function properly. Poor contact at the electromagnetic coil terminals: The electromagnetic coil connections inside the speaker are joined by aluminum rivets rather than being securely welded. If the insulation varnish on the enameled wire ends is not properly treated or the rivets are not firmly crimped, it can easily lead to intermittent contact faults, resulting in poor speaker performance. This type of fault is due to the quality of the speaker and cannot be repaired; the only solution is to replace it with a new one. Burnt contacts: Prolonged use of the horn can cause the contacts to burn and develop resistance. This reduces the current flowing through the electromagnetic coil, weakening the electromagnetic force and preventing it from attracting the armature. As a result, the diaphragm cannot vibrate normally, leading to a hoarse sound or even complete silence. When the horn is pressed continuously, if a strong instantaneous current passes through the resistance, it may still work intermittently, causing the sound to come and go.
I encountered a similar issue with my 2021 Boyue. The rear speakers having no sound is quite annoying. Common causes include incorrect audio settings, such as the volume adjustment being set only for the front speakers while forgetting the rear, or the rear speakers being disabled in the equalizer settings. Hardware issues are also possible, like a burnt or damaged coil in the rear speakers, loose wiring, or a short circuit, especially in the trunk area where wires are prone to moisture or compression. Software bugs are not uncommon either; an outdated infotainment system might cause malfunctions in the rear speaker functions, so it's best to check for updates online. To be safe, try restarting the infotainment system or restoring factory settings first. If that doesn't work, visit a professional repair shop to have the amplifier or fuses checked—don't attempt DIY fixes to avoid causing more damage. Leaving this issue unresolved can affect the enjoyment of music and conversation for rear passengers during long trips, significantly diminishing the driving experience.
As a car enthusiast, I believe the lack of sound from the rear speakers could stem from several key issues: hardware failures such as aging or damaged speaker units or poor connection wiring; software configuration problems like the rear being muted in the system settings; or control module failures where the amplifier malfunctions. Start with simple steps: check the vehicle's audio settings to see if the rear volume is turned down to zero or disabled in the equalizer. Next, inspect the wiring by opening the trunk panel to see if any wires are damaged or loose. If these steps don't resolve the issue, consider a system update or a blown fuse. It's advisable to seek professional diagnosis at a 4S store promptly, as neglecting minor issues could lead to more significant circuit failures. During daily driving, non-functional rear speakers can significantly degrade the passenger experience. Regular maintenance checks that include the audio system can help prevent such issues proactively.
