What Causes Water Accumulation in the Trunk?

[MaggieRose]

The reasons for water accumulation in the trunk include: 1. Blockage: Clogged drainage pipes of the sunroof or trunk; blocked rear drainage outlets. 2. Aging: Deteriorated sealing strips of the sunroof or trunk. 3. Damage: Broken trunk clips. 4. Collision: Dents in the trunk due to impact. 5. Leakage: Water seepage through the trunk ventilation grille. The car trunk is a space for storing spare items and transporting goods. The functions of the car trunk are as follows: 1. Storing miscellaneous items: It can hold large items and miscellaneous goods. 2. Storing essentials: Typically includes the car's spare tire, emergency kit, onboard tool kit, warning triangle, fire extinguisher, car refrigerator, and emergency fuel cap release cable.

[Reid]

Last time my car's trunk leaked water and it really worried me. I found there were several reasons. First, the trunk's sealing rubber strip had aged or deformed, allowing water from car washes or rain to seep in, especially common in older cars that have been used for three to five years. Second, there are drainage holes under the trunk floor, and if they're blocked by mud or leaves, the water can't drain out. Also, if the trunk lid doesn't close tightly or the latch is broken, it can cause leaks. In my case, it was because the trunk lid didn't close properly after a rear-end collision. Additionally, if the sunroof's drainage pipe leads near the trunk and gets blocked, water can backflow into the trunk. Finally, after checking, I found that the drainage hole was blocked. After unclogging it, I spent a long time wiping it dry with a cloth.

[Tanner]

After years of repairing cars, I've seen too many cases of water accumulation in the trunk. The main causes are usually concentrated in a few points. Clogged drainage holes are the most common, especially for cars frequently parked under trees—fallen leaves and fruits will inevitably block them. Aging and deformed sealing strips are also very common, particularly after exposure to high summer temperatures, which can cause the strips to crack. Another issue is improper repair of accident-damaged vehicles, where the sealing adhesive at the trunk seams wasn't applied correctly. A frequently overlooked cause is the sealing ring at the tail light installation point; if that small rubber ring ages and cracks, water can seep in through the light socket gaps. It's recommended to regularly clean debris from the trunk grooves and apply rubber protectant to the seals to extend their lifespan.

[Denise]

After rain, my car always had water accumulated under the trunk mat. Later, I found out that the drainage pipe of the trunk water guide channel was completely blocked. That thin pipe, located in the corner of the spare tire well in the trunk, was tightly clogged with mud and lint. When I poked it open with an iron wire, about half a bucket of water gushed out. Also, friends who modify their car audio should be careful—if the sealing of the wire holes isn't handled properly during wiring, it can also cause leaks. When washing the car, avoid using a high-pressure water gun to directly spray the trunk gaps, as it can damage the sealing strips. Now, I lift the mat every month to check and promptly remove any leaves I find.