This article explores the critical role of door latches in vehicle safety and security. It highlights the components of a door latch system, including the latch mechanism, striker, door lock actuator, and control rods and cables. The functionality of door latches, particularly their importance in preventing doors from opening unexpectedly during normal operation and collisions, is discussed. The article also addresses the significance of door latches in enhancing vehicle security by preventing unauthorized access. Advances in door latch technology, such as keyless entry systems and automatic door closing mechanisms, are examined. Finally, the importance of regular maintenance and troubleshooting for ensuring the longevity and functionality of door latches is emphasized.