What are the reasons for no sound from the dash cam?
3 Answers
The reasons for no sound from the dash cam include enabling the mute setting, the FM transmission function being turned on or the transmission frequency being different from the car radio, and the recording function being turned off. Enabled mute setting: If there is no sound from the dash cam, the mute option may have been turned on, and there is a mute setting on the settings page. Solution: Simply disable the mute setting and turn up the volume. FM transmission function is turned on or the transmission frequency is different from the car radio: Some fully functional dash cams have sound when turned on but no sound afterward, possibly because FM is enabled. The FM transmitter transfers the sound played on the dash cam to the car audio system. If the frequency is incorrect, there will be no sound. Solution: Find the FM option in the settings page, check if it is enabled, and if so, turn it off. Alternatively, adjust the transmission frequency to match the car radio. Recording function is turned off: If you find no sound when playing back the video, the recording function may have been turned off. Dash cams usually record by default, but many people turn it off for privacy reasons. Solution: You can turn it on in the settings interface.
I've been repairing cars for over a decade and have seen many cases where dash cams don't record sound. The most common issue is the microphone being blocked - dust or dirt accumulated on the vent prevents sound from being recorded, so you'll need to clean it with cotton swabs or a blower. Another frequent reason is the recording function being turned off in the settings; check the menu carefully to make sure it's enabled, as accidental button presses sometimes cause this. Software freezes are also common - a simple device restart can fix it, or you might need to update the firmware. A full or lagging memory card affects recording quality, including sound loss, so regularly clean up files or switch to a high-speed card. For older devices, the microphone components may have degraded and need replacement - don't delay as it's crucial for recording safety evidence. Power issues like loose connections can also interfere, so check all wiring is secure. Overall, monthly maintenance can prevent most problems.
I've been driving for almost five years, and the issue of my dash cam having no sound is really annoying. Once I recorded for a long time only to find it completely silent—turns out the recording was turned off in the settings. Check the app or menu for the switch position, and don’t accidentally tap it. Environmental factors also play a role; if it's windy or noisy outside, the device might auto-reduce noise, making it hard to hear—try testing in a quiet place. Sometimes the microphone port is blocked by a sticker or a hand—just clean it up. Insufficient storage can interrupt recording, causing sound loss—delete old videos or add a new memory card. Low battery can also cause intermittent sound loss—try charging it. If it’s aging, it’s time to replace the device—don’t skimp on safety records. I think paying attention to these points during daily use makes the sound function much more reliable.
