Reasons for Water Accumulation in the Jetta's Trunk Spare Tire Compartment?
2 Answers
It may be due to untimely maintenance and cleaning, leading to clogging of the sunroof drainage pipe, which causes water to enter the trunk. Below are the detailed explanations of related content: Reasons for water accumulation: The vehicle has been involved in an accident, resulting in the trunk seal strip being cracked or aged; the rear lights have been replaced, or an improperly installed reverse radar; the trunk drainage outlet is clogged. Solutions: First, open the drainage outlet at the bottom of the spare tire compartment to drain the accumulated water. Then, carefully inspect the trunk for any deformation and check if the seal strips are aged or damaged. Conduct a water spray test by continuously spraying water on the trunk and rear light areas with a water gun. Finally, observe for any leaks or check the trunk for light penetration. Systematically investigate each potential cause of water accumulation.
I've been driving a Jetta for many years and once encountered water accumulation in the spare tire well. That time, the rubber seal strip under the rear wiper had aged and cracked, allowing rainwater to seep in through the gap, especially after heavy storms when the interior would get damp. Additionally, the drainage holes near the tires were clogged with leaves and mud, preventing the water from draining out, which eventually flooded the spare tire over time. I also noticed that during car washes, high-pressure water jets were too strong and could splash water into places it shouldn’t go. Such minor issues are quite common in older cars, especially those parked under trees where dust and debris easily clog the holes. I now regularly check the seals and use a thin stick to clear the drainage pipes, and the problem hasn’t recurred. If left unaddressed, the car floor can rust and develop mold, leading to unpleasant odors—so it’s better to handle it early for peace of mind. Even with a new car, don’t forget preventive maintenance.
