What is the reason that the car door cannot be opened from the outside but can be opened from the inside?

[AugustLee]

The issue of a car door that cannot be opened from the outside but can be opened from the inside may be caused by problems with the door cable or faults in the lock mechanism itself. Problems with the cable: The door trim panel needs to be removed for inspection and repair if the cable has come loose. Faults in the lock mechanism itself: The fault can only be determined by removing the door trim panel for inspection. Door quality: The quality of a car door is mainly reflected in its anti-collision performance, sealing performance, and ease of opening and closing. Anti-collision performance is particularly important because, in the event of a side collision, the buffer distance is very short, making it easy for occupants inside the vehicle to be injured.