What Causes the Sound of Water in Car Doors?
4 Answers
The reason for the sound of water in car doors is: the door drain holes are blocked, causing accumulated water inside the door that cannot be drained in time. The solutions for the sound of water in car doors are: 1. When driving into water, try to keep the vehicle as balanced as possible to avoid splashing water that could wet the electrical parts or allow water to enter the engine's intake system; 2. Check if there is accumulated water in the wiring, door switches, and window lifting mechanisms; 3. The correct driving method is to first reduce the speed, downshift the gear, and use first gear to keep the engine speed at around 4000 rpm to maintain a steady and even speed; 4. Open the door, lower the window completely, and locate the drain holes on the inner side at the bottom of the door to let the water slowly drain out.
I have over a decade of driving experience, and the most common cause of water sloshing sounds in car doors is clogged drainage holes. The bottom of car doors is designed with drainage holes to allow rainwater or car wash water that seeps through window gaps to flow out. However, if these holes get blocked by mud, leaves, or debris, water accumulates inside the door cavity, causing sloshing sounds when the car moves. I've encountered this issue several times—simply clearing the drainage holes with a wire or small hook solves the problem. If left untreated, the trapped water can corrode internal door components, potentially leading to power window failure and higher repair costs. That's why I always check these holes after rain or dusty drives to keep them clear and prevent issues. During regular maintenance, it's also important to remind the mechanic to inspect whether the sealing strips are aging—this ensures peace of mind and safety.
The sloshing water sound inside the car door is usually caused by clogged drainage holes. There are channels in the door structure designed to let water drain out, but leaves, dust, and other debris can easily block these holes, causing water to accumulate. If the door seal strips are aged or damaged, water can more easily seep into the door cavity, creating noise. I recommend first locating the drainage holes at the bottom edge of the door and using a hairdryer or thin tube to clear any blockages. Regularly check after rain or car washes to prevent rust, as prolonged water accumulation can affect door operation and even corrode wiring. If unsure how to proceed, visit a professional workshop. When parking, avoid areas under tall trees to reduce debris buildup and protect the door interior.
When I was a new driver, I heard water sloshing in the door. After checking, I realized it might be accumulated rainwater. The door is designed with a drainage system, but it's prone to clogging, causing water to slosh inside the door cavity. If left unrepaired, it could lead to rust and damage the door panel. Simply going to a repair shop to clean the drain holes can solve the problem—don't wait until it worsens and affects driving safety. Paying attention to unusual noises and addressing them promptly is a wise choice to avoid extra expenses.
