Why Does the Trunk of a Flooded Car Open?
2 Answers
It is caused by air pressure; the trunk will automatically open when a certain air pressure is reached. Here is the relevant information: 1. Consequences of Flooding: Prolonged exposure to water can cause the wiring inside the car to loosen, crack, age, and short-circuit. The car door panels and sheet metal coverings may corrode and rust, while the car's bearing lubricants may deteriorate, leading to various noises and potentially even breakage. 2. Trunk: The car trunk is a space for storing items, and its importance should not be overlooked. A car trunk mat is an eco-friendly interior component that combines five main functions: water absorption, dust absorption, stain removal, sound insulation, and protection of the rear carpet.
We were just discussing this in the car owners' group chat. My own old car experienced this during last year's heavy rainstorm. The main issue is that the electronic trunk lock is prone to short-circuiting when exposed to water. You see, many cars nowadays use electronic buttons to open the trunk. When water seeps in and causes a short circuit, the system mistakenly thinks the unlock button was pressed, causing the trunk to pop open automatically. Additionally, the trunk seal hardens and deforms over time, allowing water to force its way through the gaps under high pressure, directly hitting the circuit board with pinpoint accuracy. There's even more absurd situations—when the car is floating sideways in the water, the impact of the current on the rear bumper sensor can cause some cars to falsely interpret it as the kick-to-open function being triggered.
