How Many Car Keys Are Usually Provided When Buying a Car?
1 Answers
When buying a car, you are generally provided with two keys: one as a spare and the other for everyday use. The primary function of car keys is to remotely lock and unlock the car doors. By holding down the lock button on the key, you can close the windows. Pressing the red horn-shaped button on the key helps locate the car, while pressing the trunk unlock button automatically opens the trunk. Here is some related information about car keys: 1. Basic Principle: A weak radio wave is emitted from the vicinity of the owner and received by the car's antenna. The signal code is identified by the electronic control unit (ECU), and the system's actuator then executes the locking or unlocking command. Each key contains an electromagnetic coil that emits microwaves. The push-to-start button also has an electromagnetic coil to receive these microwaves, which are then transmitted to the car's computer. The computer analyzes whether the key matches, and if successful, the vehicle starts. 2. Solution for Lost Keys: Replacement keys can usually be purchased at a 4S dealership or other locations that offer standard keys. Essentially, as long as the key fits correctly and can be inserted into the ignition lock, it can start the car. Once a new key is properly matched, the chip in the old key will no longer be able to start the vehicle. However, since the door locks mechanically, the old key can still open the doors.
