What should I do if the remote control key cannot lock the car door?

If the remote control key cannot lock the car door, it means that the remote control key is out of power and needs to be replaced with a new battery. First of all, you need to remove the buckle behind the battery, take out the car's mechanical key and the old battery, and install the new battery before continuing to use it. .

　　

Use the remote control key to open and close the car door and start the engine. The working principle is that the remote control key sends out radio waves, and the car antenna will control the car to make a series of actions after receiving the radio waves. Now the remote control key and the mechanical key are used together, the remote control key opens and closes the car door, and the starting of the engine is also controlled by the remote control key. The so-called electric vehicle is a vehicle that uses a battery as an energy source, and converts electrical energy into mechanical energy through components such as a controller and a motor, and controls the current to change the speed of the vehicle.