No one likes opening their car’s trunk after a downpour and finding a miniature pond forming inside. It’s frustrating and inconvenient and could lead to bigger problems, like rust, mildew, or even damage to your belongings. If you’re dealing with water flooding your car’s trunk after it rains, it’s important to understand the potential causes. Let’s explore why this happens and how you can address it.

Faulty Trunk Seals

One of the most common reasons your car’s trunk might be flooding is due to worn-out or damaged seals. The rubber seals surrounding your trunk are designed to keep water out, but over time, they can degrade due to age, temperature changes, or exposure to the elements. When the seal is compromised, water can easily make its way into the trunk.

How can you tell if this is the issue? You can run your hand along the seals to feel for any cracks or gaps. If the rubber feels brittle or you notice visible tears, that’s a strong indication that the seals need to be replaced. Fortunately, replacing trunk seals is generally an inexpensive and straightforward job.

Blocked Drainage Channels

Most vehicles have drainage channels to direct water away from critical areas like the trunk. These channels help ensure water doesn’t pool in places it shouldn’t. However, if debris such as leaves, dirt, or even small stones clog the drainage system, water will have nowhere to go and may end up in your trunk.

To check if blocked drainage channels are the cause, look for any signs of blockage around the perimeter of your trunk or beneath your car. If water is pooling around areas where it normally wouldn’t, a clogged channel may be to blame. Regular cleaning of these channels can help prevent this issue, and using a small brush or air compressor can clear out debris.

Cracked or Damaged Tail Lights

Believe it or not, cracked or improperly sealed tail lights can allow water to leak into your trunk. Since the tail lights are attached directly to the car’s body, any gaps or cracks in the housing can create a pathway for rainwater to seep in.

This issue is often harder to spot than faulty seals, but it’s just as common. Check your tail lights for any visible cracks or gaps between the light and the car body. If you find anything unusual, applying a sealant or replacing the lights may solve the problem.

Rear Window Seal Leaks

Another sneaky source of trunk flooding could be the rear window seal. Water may find its way through the seal and trickle down into your trunk, especially during heavy rainfall. This is more common in older cars, where window seals may have deteriorated over time.

You can usually spot this problem by checking for moisture along the rear window or under the lining of your trunk. If you notice wet spots around these areas, your rear window seal might be leaking.

Rust Holes or Body Damage

In some cases, physical damage to your car’s body can be the culprit behind a wet trunk. Rust can eat away at your vehicle’s metal, creating small holes that let water in. Even minor damage to the trunk lid or body from previous accidents or impacts could create openings for rainwater to enter.

Inspect your trunk area closely for any signs of rust or body damage, especially underneath the vehicle. Small rust spots can be repaired, but larger holes may require professional attention to ensure the integrity of your car's structure.

Tired of a soggy trunk? Bring your car to Reeves Tire & Automotive, where we can inspect and fix your car’s seals, drainage, and more to keep your vehicle dry and in top condition.