What Causes Water Leakage in the Trunk?
2 Answers
Generally, there are two common scenarios that can lead to water leakage in the trunk. The first is a faulty trunk seal strip. To test this, you can use a spray method, but someone must spray water from outside the trunk to observe any leakage. The second, less likely scenario is damage to the negative pressure vent caused by water splashed up by the tires. It's recommended to conduct a thorough inspection. Here are some additional tips: 1. Self-inspection for leakage causes: You can simulate rainwater flowing from the roof using a garden spray bottle to identify potential leakage points. 2. Common leakage causes to check: Inspect whether there are issues with the tail light seals, leaks around the rear windshield rubber strip, cracked seal strips, clogged drainage holes near the seals, or aging and cracked metal panels, among other potential problems.
Having worked in car repairs for so many years, I often deal with trunk water leakage issues. The most common cause is aging and cracked sealing strips—those rubber strips harden over time and start leaking when exposed to rainwater. Another issue is clogged drainage holes, filled with fallen leaves or mud, preventing rainwater from draining and causing it to seep into the trunk. A loose or improperly closed trunk lid is also a culprit, such as deformed sealing strips or loose latch positions, creating gaps that let water in. I once encountered a case where a car's trunk lid was slightly misaligned after a collision, leading to long-term leakage. Additionally, sunroof drain tubes can sometimes kink or clog, causing water to flow along the interior and pool in the trunk. If left unaddressed, rust can become a bigger problem, potentially corroding wiring or metal components. I recommend checking the sealing strips and drainage holes every six months, clearing any blockages during car washes, and visiting a repair shop to replace parts at the first sign of leakage to ensure driving safety. Don’t wait until water buildup causes major trouble.
