
You can try pushing the door with your body from both inside and outside the car, or ask a friend to help—one person pulls the door from the outside while another pushes from the inside. Locate the door cable and use a tool like a hook to attempt pulling or pushing the cable or its connection point with the lock, which might release it. Remove the door panel from inside the car, but since the door won't open, this can be challenging and may result in broken clips.

I've fixed the issue of a car door not opening by myself before. First, check if the child lock is stuck, especially for the rear doors—the switch is on the side of the door frame. In winter, it might be frozen; just use a hairdryer to heat the keyhole. Mechanical issues often involve a broken cable or a jammed lock mechanism, requiring the removal of the interior panel: use a plastic pry tool to start from the bottom gap, being careful not to damage the clips, then check if the cable is detached or rusty after removing the screws. For electronic locks, try the mechanical key backup first, then check the fuse box. Once, the spring in my car's lock mechanism broke, and I bought a replacement part for 20 yuan on Taobao and installed it myself. The whole repair takes about an hour, but I recommend beginners seek help from a technician, as the door panel clips are particularly prone to breaking.

Last week, the passenger door of my car suddenly wouldn't open—neither from the inside nor outside. I first tried using WD-40 lubricant spray on the lock cylinder at a gas station, but it didn't work. Later, I discovered that the linkage rod of the door handle had come unhooked, requiring the removal of the door panel. Not confident in doing it myself, I called for mobile repair service. The technician mentioned that hardened door seals in winter can also cause the door frame to deform and jam the latch. He recommended regularly applying grease to door hinges and checking the circuit voltage of power locks annually. The repair cost 180 yuan, and the technician advised against directly spraying high-pressure water into door seams during car washes, as it can wash away the dust barrier and lead to rust.

When the car door won't open, first check basic points: child lock position, key battery (for electronic locks), and freezing conditions. For mechanical failures, focus on inspecting the linkage mechanism of interior and exterior handles, listening for unusual noises when pulling. Use a diagnostic tool to read fault codes for electronic systems. During repair, remove the door panel to inspect the lock module; common faults include motor burnout or wiring short circuits. For lubricating metal components, silicone-based grease works better than regular grease. If the lock cylinder is damaged, replacement requires reprogramming the key chip, costing approximately 300 yuan. Complete the overall inspection and repair within 2 hours, and it's recommended to preserve the original factory crash beam sealing strip.


