This article explores the evolution of the car tailgate lock from its early mechanical systems to advanced electronic technology. It details how traditional mechanical locks, which required manual key operation, gradually gave way to electronic locks that offer remote control, keyless entry, and enhanced security features. Modern electronic car tailgate locks provide improved convenience, integration with central locking systems, and better theft protection. Looking to the future, innovations such as biometric authentication and app-based controls are expected to further enhance the security and usability of car tailgate locks.