What Causes the Tailgate Lock Malfunction in Baojun 730?
3 Answers
Issues with the electric tailgate operation are generally caused by improper installation or operation. There are various scenarios of improper installation, and potential causes can be identified by checking the control box, electric latch, support rods, and whether the tailgate opens and closes normally. If the cause cannot be determined through self-inspection, it is essential to visit a professional auto repair shop for servicing. Below are some relevant tips for door maintenance: Proper Door Closing: After exiting the vehicle, push the door to a distance of 10-15cm from the car body, then gently apply slight force to close it. Alternatively, slowly push the door until it closes before releasing your hand. This method effectively protects the door and avoids loud noises. Door Maintenance: The key to prolonging door lifespan is "maintenance." Frequent door operation can lead to increased wear, rust, or even failure if the door stopper and hinges are not lubricated in time. It is advisable to have a professional apply grease to lubricate the door hinges and stopper, thereby reducing wear and tear.
After years of driving a 730, I've encountered several common causes for tailgate lock failures. Dust accumulation jamming the lock mechanism is frequent, especially when driving on dusty roads where debris enters and obstructs movement. Oxidized wire connectors causing poor contact is another issue, with rain or aging accelerating corrosion. Wear and deformation of the linkage mechanism, such as from excessive force during frequent operation, can twist components. Insufficient lubrication increases friction, eventually making the lock stiff. For DIY checks, spraying rust remover to clean the lock channels and manually testing the mechanism for smoothness helps. You can also test the remote: press the tailgate button and listen for the motor sound—its absence may indicate an electrical fault. Avoid slamming the door and apply lubricant regularly to prevent wear. Simple fixes save time and money, but complex issues require professional inspection. Remember, safety first—a malfunctioning tailgate risks cargo security, so don’t overlook it.
As someone who frequently repairs cars, I've dealt with many 730 tailgate lock failures, mostly electrical issues. Dirty or damaged sensor probes can misjudge the door status, sending incorrect signals to the control unit. Burned relay contacts cause unstable current, preventing the lock mechanism from functioning. Aging and exposed main wiring harnesses can break or short-circuit after frequent bending at the tailgate hinge. Control module program errors can also cause crashes, requiring computer diagnostics for reset. Repair costs are low: sensors cost a few dozen yuan, but professional calibration is needed after replacement. Use a multimeter to check wire continuity, and avoid cutting wires for DIY repairs to prevent short circuits. It's recommended to have the electrical system checked at a 4S shop for reliable service, as they understand original factory configurations. Daily maintenance includes preventing water from seeping into connectors and keeping them dry to extend lifespan.
