What Does the Key Symbol on the Car Dashboard Mean?

[VonDante]

The appearance of a key symbol on the car dashboard indicates that the car's anti-theft system has been triggered. When the anti-theft system is activated, a key icon will be displayed on the dashboard. Modern car keys are no longer purely mechanical; they are integrated systems combining circuits, networks, and mechanical components. If the signal from the key does not match the car's password, the car's system will recognize it as an illegal entry, and the anti-theft system will automatically lock the engine, preventing the vehicle from starting. The anti-theft system can be triggered in several situations, such as not using the electronic key lock button, entering the car and starting the engine, or using a mechanical key to open the trunk lid; opening the engine hood and disconnecting then reconnecting the battery terminals; or damaging the car door to forcibly enter the vehicle. These actions will activate the anti-theft system, resulting in the engine being locked and unable to start.