What Are the Types of Car Keys?

[DiReed]

Currently, common types of car keys on the market include mechanical keys, remote control keys, touchscreen LCD keys, and smart wristband keys. Regardless of the type, their basic functions are to unlock doors and start the engine. Some remote control and touchscreen LCD keys can also enable features like automatic parking and vehicle information display. The basic principle of remote control keys: A weak radio wave is emitted from the owner's side, which is received by the car's antenna. The electronic control unit (ECU) identifies the signal code, and then the system's actuator (motor or electromagnetic management coil) performs the unlocking/locking action. This system mainly consists of a transmitter and a receiver. When using a smart remote key, avoid exposure to strong magnetic fields, such as high-voltage power lines, transmission towers, or other areas with strong magnetic signals, and try to avoid parking in such locations. Since smart keys use low-intensity radio waves, they may not function properly under magnetic interference. Additionally, when using a smart key, avoid throwing it, as most smart key casings are sturdy, but frequent impacts can cause poor internal battery contact.