What are the reasons why the car door cannot be opened?

[LaAyla]

The reasons why the car door cannot be opened are as follows: 1. The car or remote key battery is depleted: The receiving sensor or transmitting sensor cannot function properly, so the door naturally cannot be opened. 2. Child lock engaged: As is well known, to protect children's safety, many vehicles are equipped with child locks on the rear doors. When the child lock is engaged, the rear door cannot be opened from the inside and can only be opened using the exterior handle. 3. High-speed driving: The central locking system automatically engages. Many car owners may not be aware that when the vehicle speed exceeds 10 km/h, the central locking system will automatically lock the doors. 4. After washing the car in winter, water was not wiped dry, and the door froze: It will return to normal once the temperature rises. Residual water from washing the car accumulates in the door handles, locks, and door gaps. The extreme cold overnight causes the accumulated water to freeze, firmly freezing the door shut, making it naturally impossible to open in the morning.

[JosieRose]

There are quite a few reasons why a car door won't open. I've experienced it several times myself, and the most common issue is the door lock getting stuck, possibly due to dirt or rust buildup inside, preventing the key or handle from turning. Another reason is if the child lock is accidentally activated, making the rear door impossible to open from the inside. Last time I took my kid out, I forgot to turn it off and struggled for a long time before figuring it out. Additionally, a weak remote key battery can cause it to malfunction, especially on rainy days when moisture might cause a short circuit. In winter, doors can freeze shut, with ice blocking the gaps, requiring careful melting with warm water. For maintenance, it's advisable to regularly clean the keyhole and apply lubricant to prevent rust, which can help avoid such hassles. If you do encounter a stuck door, avoid forcing it—first, check the key battery or try manually prying it open slightly with a tool.

[MargaretRose]

I often encounter the issue of car doors not opening, mostly due to minor mechanical faults. For example, the door handle may be aged or deformed, making it less responsive when pulled forcefully, possibly because the internal spring is broken or the latch is loose. Another common reason is a malfunction in the remote control system; if the key signal is weak or the battery is nearly dead, the door won't respond to unlocking commands. Environmental factors also play a significant role. High temperatures in summer can cause rubber seals to expand and block the door, requiring a gentle push to relieve the pressure. When I lived in a humid area, the door hinges rusted and became difficult to open, but regular oil spraying solved the problem. My advice is to start with simple checks, like resetting the lock button. If that doesn’t work, visit a repair shop promptly to avoid bigger issues that could damage the car.

[OAngela]

A door that won't open may seem minor but affects safety. I always check the lock status before driving. Common causes include faults in the door lock's electronic sensor, such as water damage or wear-induced short circuits. Or the child safety lock might be activated, preventing the rear door from opening from inside—you'll need to deactivate it from the outside. Another possibility is a malfunctioning key remote; try replacing the battery or using the mechanical key. Avoid yanking forcefully, as it can damage the handle. Simple fixes like applying lubricant can prevent rust.