Is There Any Harm If the Trunk Gets Soaked in Water?

[LaAnderson]

There are harms if the trunk gets soaked in water. Below is the relevant introduction about the trunk being soaked in water: 1. The harms of the trunk being soaked in water are: Water accumulation in the trunk can easily lead to rusting, and in severe cases, perforation may occur. The spare tire placement area in the trunk is relatively low, making it prone to water accumulation after getting wet. The trapped moisture can cause the car's interior to become damp and moldy. 2. The solution for a soaked trunk is: There is a rubber drain plug at the bottom of the spare tire compartment in the trunk; removing it will allow drainage. Check if the trunk lid is deformed and whether the surrounding rubber seals are intact. Take out all the items and the trunk liner, then leave the lid open for about an hour to prevent mold and rust.

[KaydenMarie]

After my car got flooded in the last heavy rain, I truly realized how severe trunk water intrusion can be. Water easily seeps into the spare tire well—rusting metal components is the least concern. What's worse is the corrosion and short-circuiting of hidden wiring connectors, potentially causing failures in components like interior lights and electronic locks. Even after air-drying for a week, mold and foul odors persisted. The carpet underlay foam absorbed water and bred bacteria that couldn't be fully cleaned, contaminating luggage with mildew. Prolonged exposure may even deform rear panels and crack weld seams, directly compromising body rigidity. So upon encountering flooding, immediately tow the vehicle to a professional repair shop for complete floor disassembly, drainage, and drying—otherwise, restoration costs could match buying a new car.

[MacValeria]

My friend's old car had a leaking trunk that he didn't pay attention to, and now the AC blows out a musty smell whenever turned on. Areas that have been soaked in water are most prone to mold growth, especially the soundproofing layer with sponge under the carpet—once soaked, it can stay wet for months without drying out, and when taken apart, it's all green. The trunk wiring is connected to the reverse radar and power tailgate, and rust-induced short circuits would cost thousands to replace the whole set. Even worse, water accumulated in the spare tire well caused rust, and during bodywork, it was found that the entire floor panel was almost rusted through. Now it's too late to fix, and the car's resale value dropped by 40%. So, if water intrusion is detected, the first step is to drain the water and remove the floor mats, preferably using an ozone disinfection machine to eliminate odors and kill bacteria.

[GavinFitz]

As someone who has long studied car maintenance, I believe the hazards of water in the trunk go far beyond surface damage. The mixture of oil, dirt, and water can corrode welding points, and in severe cases, lead to metal fatigue and cracking in the chassis. Electronic components may not show immediate symptoms when exposed to water, but months later, oxidation at the connectors can trigger fault codes. My biggest concern is the corrosion of wiring harnesses causing voltage instability, which could dangerously affect the vehicle's control systems if it spreads. Additionally, prolonged moisture retention can damage the sealing strips of the car body, and the risk of freezing cracks in winter adds to the trouble. The correct approach is to immediately disconnect the battery, use a vacuum to remove the water, dismantle the interior for three days of sun exposure, and finally spray rust inhibitor to complete the treatment.

[LaMichael]

I've seen too many used cars suffer severe depreciation due to water damage in the trunk. The biggest issue with flood-damaged vehicles lies in hidden areas. The spare tire mounting bolts rust solid and become impossible to loosen, while oxidized wiring harness connectors beneath the partition can easily cause spontaneous combustion. The worst part is the lingering odor - even after completely removing the interior, mold stains on the frame are difficult to eliminate. These water damage traces can't hide from professional inspection equipment, and resale value typically gets halved later. I recommend immediately contacting your insurance company for damage assessment. Don't skimp on replacing necessary components like carpets and wiring harnesses, as incomplete repairs will always leave hidden dangers when driving.

[StOscar]

My SUV had water accumulation in the trunk after wading last year. Initially, I thought just drying it out would suffice, but it turned out to be a costly mistake. After two months of rainwater soaking the spare tire well floor, bubbles and rust started appearing, and the original anti-corrosion coating peeled off. The repair technician said this type of rust is like cancer—the more you fix it, the worse it gets. The electronic tailgate sensor also started malfunctioning intermittently, with repair costs quoted at 20,000 yuan. The mold stains were even more stubborn; even after spraying five bottles of deodorizer, there was still a fishy smell. Now, every time it rains, I feel anxious, as the wiring hazards are like ticking time bombs. Later, I learned that professional treatment requires removing seats and lifting the car body. If only I had sent it to the 4S shop for a thorough inspection right away.