What does the key symbol on the dashboard mean?

[AdelineLynn]

The appearance of a key symbol on the dashboard indicates that the vehicle cannot detect the car key. This could be due to a malfunction in the car's receiver module or the activation of the car's anti-theft system. Here is some relevant information about car anti-theft systems: 1. Key system: It is an integrated circuit, network, and mechanical key system. When the signal from the key does not match the car's password, the car system will recognize it as an illegal entry, and the anti-theft system will automatically lock the engine, preventing the vehicle from starting. 2. Engine lock situation: When 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, disconnecting and reconnecting the battery's positive and negative terminals.