What are the reasons why a car remote key cannot lock the vehicle?

[KimberlyFitz]

Reasons why a car remote key cannot lock the vehicle: 1. The remote key battery is low on power, simply replace the battery; 2. When the vehicle is parked in an area with electromagnetic interference, the remote key may also fail to lock the vehicle; 3. Mechanical failure of the door lock mechanism. The remote key is used to open and close the doors as well as start the engine. The working principle is: the remote key emits radio waves, and the car antenna receives these waves to control the vehicle to perform a series of actions. Currently, remote keys and mechanical keys are used together, with the remote key opening and closing the doors, and the engine start also controlled by the remote key.