You can start it with a mechanical key. If the mechanical key cannot be started, you need to go to the 4s shop to change a new key with a chip, or simply change a new key to disable the previous chip. Today's car keys are on a chip, a core system. The reading coil of the car ignition lock core reads the chip of the key; All chips have fixed digital information.
Remote key means that you can open and lock the door remotely without putting the key in the keyhole. Its biggest advantage is that it can be unlocked and locked remotely, no matter day or night, without looking for a keyhole. The owner sends out a weak radio wave, the radio wave signal is received by the car antenna, the signal number is recognized by the electronic controller ECU, and then the actuator of the system (motor or electromagnetic static coil) performs on\/off action. The system is mainly composed of transmitter and receiver.