Why is there no sound when locking the BYD Song?

[StellaMarie]

The reason why there is no sound when locking the BYD Song is that the locking sound setting is not enabled. The owner needs to find the locking sound option in the vehicle settings menu and turn it on. Taking the BYD Song 2021 Classic Edition 1.5T Manual Comfort Model as an example, its dimensions are 4600mm in length, 1830mm in width, and 1700mm in height, with a wheelbase of 2660mm, a fuel tank capacity of 63 liters, and a curb weight of 1568kg. The front suspension of this vehicle is a MacPherson independent suspension, and the rear suspension is a multi-link independent suspension. It is equipped with a 1.5T turbocharged engine, delivering a maximum horsepower of 160PS, a maximum power of 118kW, and a maximum torque of 245Nm, paired with a 6-speed manual transmission.

[MacFinn]

I just encountered a situation where my BYD Song didn't make any sound when locking, and found it's quite common. It might be that the sound setting was turned off. Go to the settings menu in the car's infotainment system, find the lock confirmation sound option, and turn it on. Or the horn might be faulty—check if the horn wires are loose or if a fuse has blown. Another possibility is that a door isn't fully closed, so I'd pull each door to confirm. The locking sound is important as it confirms the car is locked. Without it, if I leave without confirming, the car could be at risk of theft. I suggest restarting the infotainment system first. If that doesn’t work, check the fuse box or visit a 4S shop for a professional inspection—don’t compromise safety.

[NovaFitz]

As someone who has driven for several years, I can say that the silent locking issue with the BYD Song is usually a minor problem. First, consider whether you've turned off the alert sound: check the sound settings on the central control screen to ensure the locking prompt is enabled. Another common cause is a faulty horn, possibly due to aging or moisture in the wiring, especially during the rainy season. I've encountered a similar issue—testing the horn by locking the car with the key. If it doesn't sound, you'll need to check the fuse or replace the horn. Although the locking sound is subtle, it's very practical for preventing misoperations. Addressing it promptly can save you trouble; just check the car settings or fuse box yourself, and don't wait until a major issue arises.

[ZacharyAnn]

A silent car lock is no small matter, especially for the BYD Song's anti-theft alert tone. I believe the most common issue lies in the settings: check the sound toggle in the infotainment system. If that doesn't work, it could be a faulty horn or a short circuit—high summer temperatures often trigger such faults. Promptly inspect whether the fuse is blown, but don't risk DIY testing by opening the cover. Whenever my car locks silently, I always double-check if the doors are truly secured to avoid safety hazards. This minor glitch hints at bigger problems—address repairs promptly when needed.