Why Does the Horn Sound When Unlocking a Car with the Key?

[SanHenry]

The horn sounding when unlocking a car with the key is a feature set by the driver, primarily depending on the car model. Generally, most cars will emit a sound when unlocked with the key, which is due to the car's settings. The main purpose is to allow the driver to identify the direction of the vehicle through the sound, thereby locating its position. Methods to enable the horn sound when locking the car are as follows: Central Control Settings: Configure through the car's central control. Find the "Vehicle Settings" option on the central console, then enter the "Control Page." On the control page, enable "Lock Sound Alert," and the horn will sound once when the car is locked. Key Settings: Configure via the key. If the car key has a mute button, simply press the mute button towards the car to toggle the lock sound alert on or off. ECU Settings Modification: If the car does not have a mute button and cannot be set through the car's system, the only option is to visit a 4S shop and have a technician modify the ECU data.