Why Can't the Front Passenger Door Be Opened from the Inside?

[NadiaLee]

The reasons why the front passenger door cannot be opened from the inside are as follows: 1. Issue with the door cable—it may require removing the door trim panel for inspection, as the cable might have come loose. 2. A malfunction in the lock mechanism itself, which can only be confirmed by removing the door trim panel for inspection. Solutions are as follows: 1. The quality of a car door is mainly reflected in its crash resistance, sealing performance, ease of opening and closing, and other functional indicators. 2. Crash resistance is particularly important because, in the event of a side collision, the buffer distance is very short, making it easy for passengers to be injured. 3. A high-quality door will have at least two crash beams, which are relatively heavy, contributing to the door's weight. 4. In modern vehicles, designers strive to reduce weight, including that of doors (e.g., by using new materials), to improve efficiency while ensuring safety performance. 5. Based on the number of doors, cars can be classified as two-door, three-door, four-door, or five-door models. Most sedans for official use are four-door, while family cars may have three, four, or five doors (with a lift-up rear door). Sports cars are mostly two-door models.