What are the reasons why car doors sometimes cannot be opened?

[Evelyn]

Car doors sometimes cannot be opened due to the following reasons: 1. The child lock is engaged; 2. The door lock cable is malfunctioning; 3. The door hinges or lock striker are deformed; 4. The door check is faulty. Generally, rear doors of vehicles are equipped with a child lock, indicated by a child symbol near the door edge. If it is accidentally engaged before closing the door, the door will not open. A malfunctioning door lock cable directly affects the lock mechanism, and in such cases, the only solution is to replace the door lock cable. When a door is subjected to external force, it may cause deformation of the door hinges or lock striker, preventing the door from opening. If the door check is faulty, replacing it with a new one will resolve the issue.