Your Vehicle's Responder Key Thwarts Theft With Unique Transmitter And Receiver Code Activity That Bars Ignition
If your car requires a transponder key to start the ignition, then you have a double security to bar thieves from activating ignition. There is a transmitter built inside your car's transponder key. Near the ignition switch of your car is a receiver. When you turn over the ignition switch, the key then transmits a signal that is very low. Only your vehicle can detect the signal, which enables the ignition switch.