Where is the spare car key?

[Gordon]

Car spare keys are generally placed on the small shelf above the car. The following is an introduction to car keys: 1. Introduction: It is essentially a remote control for the car. 2. Functions: In addition to controlling the opening and closing of car doors, the car remote can also control the windows and trunk, both of which are commonly used in daily life. When you want to increase air circulation inside the car for ventilation or to remove odors, you can simply use the remote to roll down the windows. 3. Principle: The signal contains corresponding command information. The car's antenna receives the radio wave signal, and after authentication by the Body Control Module (BCM), the actuator performs the unlocking/locking action.