What does KEY mean on a car?

[VonCourtney]

KEY on a car refers to the key. Typically, for vehicles equipped with smart keys, if the car cannot detect the key (e.g., the smart key is not inside the car, is not within the effective range, or the key malfunctions), the KEY indicator light on the dashboard will illuminate. Car Smart Key: It utilizes the wireless remote control function of the central locking system, allowing you to unlock and lock the doors from a distance without inserting the key into the lock. Its working principle involves emitting a weak radio wave from the key, which is received by the car's antenna. The electronic control unit then identifies the signal code, and the system's actuator (motor or electromagnetic coil) performs the locking or unlocking action. Key Usage Precautions: Do not expose the key to environments below 0°C or above 50°C, as this will significantly reduce the battery's lifespan. Keep the key in a dry environment, as moisture can degrade battery performance. Avoid placing the key with hard objects, as this can scratch the chrome plating on the key. Do not place the key near high-power electrical appliances such as TVs, microwaves, washing machines, or computers, as this may cause the key to malfunction.