Can You Drive a Car Without the Key?

[VonCody]

Generally, you cannot drive a car without the key because the vehicle is equipped with an engine immobilizer system. Below is the working principle and application of the engine electronic anti-theft system: Working Principle of the Engine Electronic Anti-Theft System: When using the key to start the engine, i.e., turning the key to the "ON" position, the electronic anti-theft ECU within the anti-theft system will transmit a radio frequency to the key's transponder to verify the key's authenticity. Additionally, the anti-theft ECU must confirm the password with the engine ECU before the engine can be started. Application of the Engine Electronic Anti-Theft System: The engine electronic anti-theft system is now widely used in passenger vehicles. Common models equipped with this system include the Ford Fiesta, Geely Emgrand EC7, Chery A3, and Volkswagen Polo.