What Causes the Random Jumping of the Central Lock on the Baojun 730 Door?
2 Answers
The random jumping of the central lock may be due to a damaged lock block, causing the motor to keep working. It could also be a malfunction of the sensor that detects whether the door is tightly closed, leading to confusion in the control computer information and causing the motor to keep working. Here is a detailed introduction about the Baojun 730: 1. Overview: The Baojun 730 is a 7-seat family car customized by SAIC-GM-Wuling for the needs of millions of users, tailored for the "Chinese big family." On March 1, 2019, the 2019 Baojun 730 CVT version was officially launched, including two models: the 1.5T CVT Fashion and the 1.5T CVT Flagship. 2. Features: The Baojun 730 has practical space, high safety, comfort, and rich configuration. The 2019 Baojun 730 CVT version is equipped with a power combination of "1.5T turbocharged engine + simulated 8-speed CVT continuously variable transmission." The engine has a rated power of 111kW and a maximum net torque of 250Nm.
My Baojun 730's central door lock keeps acting up randomly, which is quite a common issue. I think it's mainly related to mechanical problems with the door lock mechanism. The springs or linkages inside the lock can wear out or get stuck over time, causing erratic movements when the door vibrates during closing. Additionally, oxidation on the door switch contacts leads to poor connectivity, sending false signals to the Body Control Module (BCM), which then issues random lock/unlock commands. Regularly check the door seals to prevent water ingress and corrosion, especially after rain—my friend's car had similar issues due to high humidity. Also, the wiring near the door hinges often gets bent repeatedly, and internal breaks over time can trigger a chain reaction. Getting it replaced at a 4S shop costs around 200 yuan, and applying lubricant regularly can slow down aging and prevent accidental locking/unlocking while driving.
