What Causes the Door Lock to Repeatedly Pop Open Automatically?

[DeNorah]

The door lock repeatedly popping open automatically is often caused by issues such as the door sensor being triggered, a ground fault in the automatic door power supply, or a malfunction in the brake light power line. Below are the relevant explanations: 1. Automatic Door Lock Function: The purpose of the automatic door lock function is anti-theft. It quickly locks the doors after driving to prevent door-pull robberies during traffic jams or at red lights, providing a certain level of security. Generally, after starting to drive, pressing the brake pedal for the first time will automatically lock the doors to prevent accidental opening by passengers inside, which could lead to falls. Many vehicles now have this design, especially family cars. When the vehicle is stopped in Park (P) or turned off, the automatic door lock releases to facilitate exiting. 2. Automatic Door Power Ground or Brake Light Power Line: If the automatic door lock jumps erratically while driving, it may be due to a damaged automatic door power ground or brake light power line. It is recommended to visit a repair shop to diagnose and fix the issue.