Why can't the car door be opened?

[MarianaDella]

The reasons why the car door cannot be opened are as follows: 1. Remote control failure: mainly due to unresponsive buttons, low battery, environmental factors, strong signal interference or shielding, anti-theft system malfunction, or the need to re-match the remote control encryption. 2. Car door frozen in winter: In northern regions, winter temperatures are very low, often below freezing. After washing the car, residual water can accumulate in the door handle, lock, door frame gaps, etc. Overnight freezing turns the water into ice, firmly freezing the door shut, making it impossible to open in the morning. 3. Fault in the door lock mechanism itself: The probability of the door lock itself failing is very low, mostly occurring in older cars around 10 years old. No matter how high-end the car is, its working principle may not be commonly understood, but the structure of the door lock is relatively simple, basically consisting of a lock cylinder, lock block, central control motor, and operating mechanism.