Why Can't the Car Door Open on Rainy Days?
2 Answers
On rainy days, the inability to open the car door may be caused by moisture affecting the central locking system's wiring. Below is relevant information about the central locking system: 1. Introduction: The central locking system, fully known as the Central Control Door Lock, is a car accessory that allows remote locking and unlocking without inserting the key into the lock. It consists of a door lock switch, an actuator, and a controller. 2. Main Functions: When the driver locks their door, all other doors lock simultaneously. The driver can unlock all doors at once using the door lock switch or open a single door individually. When the vehicle reaches a certain speed, all doors automatically lock to prevent accidental opening by passengers. Besides the driver's door, other doors are equipped with separate spring lock switches for independent control of each door.
I've encountered the situation where the car door won't open on rainy days several times, possibly due to rainwater seeping into the door lock causing rust or scale buildup that jams it. Especially during the rainy season, high humidity can easily cause metal parts to oxidize and expand. Cars with electronic locks are more sensitive, as rainwater may short-circuit the control module or affect signal transmission if water enters the door handle. I recommend checking the door seals for wear and aging during regular car washes and spraying lubricant into the lock cylinder to prevent rust. If the door already won't open, don't force it, as this can damage the handle or locking mechanism. Try using a hairdryer on low heat to warm the keyhole and melt any ice or moisture, then gently turn the key. Paying attention to these points during regular maintenance can help avoid rainy day embarrassments and potential risks.
