Water in Trunk of Tesla? Do This!

Water in Trunk of Tesla

Wet Trunk in Your Tesla? It is more than just an inconvenience but a sign of something sinister. So, let us discover the reasons for this problem and how you can solve them to keep your Tesla in a good condition.

Why is There Water in My Teslas Trunk?

1. Faulty Trunk Seal

Although you probably don’t think much about the trunk seal, it is very important in preventing water from entering the trunk. So, what’s its purpose?

Purpose of the Trunk Seal

In a nutshell, the trunk seal acts as a separator. The seal runs along the edge of the trunk lid and provides for tight closure for the trunk. Its main job? To avoid the possibility of water, dust, and other miscellaneous elements from penetrating into the boot.

Wear and Tear Leading to Water Seepage

As with many parts of a car, the trunk seal will wear out over time. Factors such as temperature fluctuation, exposure to rough elements, and years of use wear down the quality of the seal. A worn-out or damaged seal might not be immediately visible to the naked eye. However, its effects are clear: water silently enters the trunk.

But how do you know it’s the seal? So, whenever you spot some dampness or puddles in the trunk after a rainstorm or carwash, it indicates that the seal is broken.

Remedies and Suggestions

Start by inspecting your trunk seal visually. Identify any visible cracks, gaps, or flattened areas. Weak spots can be established by gently pressing down on several areas.

If you find any issues, here are some steps you can take:

  • Temporary Fix: The seal conditioners are found in auto stores for a quick fix. This can revitalize the rubber and prolong its lifespan for a while.
  • Permanent Solution: Consider replacing the trunk seal (view on Amazon). It is a low-cost part, that is easy to manage. But if you are not at ease, the best thing to do is consult a professional or visit your local Tesla service center.

The trunk seal is more significant than it looks at first sight. Checking it regularly for wear and tear and making timely interventions may spare you from a wet trunk.

2. Blocked or Misaligned Drain Channels

Have you ever wondered why rainwater on your car’s surface disappears after a while? Behind this masked miracle are the drain channels.

Importance of Drain Channels

Water is diverted through discreetly designed drain channels that prevent water from entering areas where it can pool and cause more damage. On the trunk, these channels direct water around the edges of its opening so it does not flow inside its cavity.

Signs of Blocked or Misaligned Channels

  • Puddles and Dampness: The channels might be blocked if you find water entering your trunk, especially after rain or washing the car.
  • Visible Debris: With time, channels may have left dirt or other sediments, blocking water from flowing. If you see such a build-up, it indicates a blockage.
  • Water Not Draining Properly: You can also try to pour a little water (using a cup or bottle) near the seal of the trunk, and you will find that it shall exit through these channels. If not, it could indicate a misalignment or blockage.

Recommendations for Unblocking and Realigning

  • Regular Cleaning: Include the cleaning of drain channels in your car maintenance habits.
  • Use Compressed Air: Blowing channels out with a minor blast from a can of compressed air may loosen any obstructions.
  • Inspect for Misalignment: The channels might sometimes be displaced from their original positions due to normal tear and wear. If misalignment is suspected, visiting a Tesla service center for realignment is advisable.
  • Avoid Parking Under Trees: To reduce the occurrence of leaves and tree sap, it is advisable to avoid parking under trees, particularly in autumn.

Maintenance of clear and well-aligned drain channels helps keep water out of your trunk. Some attention now can avert bigger problems later on.

  1. Broken Tail Light Seals

Tail light seals have a double life. First, they ensure that the tail lights are safely secured to the body of the car. Secondly and most importantly for this discussion, they stop water from penetrating in the lights and into the trunk area. In other words, they keep everything dry on the inside.

Common Signs the Seals are Compromised

If the tail light seals are beginning to fail, you might notice:

  • Condensation Inside the Tail Lights: This is a major red flag. If they mist up inside or there are moisture droplets, water enters.
  • Dampness Near the Tail Light Area: Any evidence of wetness or dampness in the carpet or interior around the tail lights suggests a real problem.
  • Visible Damage to the Seals: Cracked seals, split seals, or aged ones can be easily seen by visual inspection.

Solutions to Address the Issue:

  • Tail Light Seal Replacement: Once you’ve established that the seals are problematic, replace them. It’s possible to do this yourself with the proper parts and some coaching, depending on your comfort level.
  • Dry Out the Tail Lights: If there’s condensing inside, you should get to the tail light assembly and use a dryer on its low setting to dry out moist. Ensure everything’s dry before reassembling.
  • Regular Inspections: Periodically inspect the tail light seals, mainly after seasons in which there were extreme temperature changes since it might hasten wear and tear.

Regular check-ups and timely replacements can help you avoid damp surprises.

  1. Malfunctioning Rear Window Seals

The rear window seal mainly prevents external factors such as rain, dust, and wind from entering the car’s interior, specifically the trunk below it.

Indications of a Malfunctioning Seal

Here’s how you can identify if the rear window seal might be the cause of that annoying pool of water in your trunk:

  • Visible Deterioration: Over time, seals can dry out, get cracked, or even break down. Seals are worn out if any parts of the seal appear brittle or broken.
  • Water Streaks or Marks: See any water streaks or wet marks on the inside of the rear window moldings? This is sometimes a clue that water sneaked in.
  • Gaps or Lose Sections: If any seal feels loose or you see big gaps, it’s probably not providing a watertight seal.

Suggestions for Rectification

  • Re-Seal the Window: Automotive sealants can be temporary fixes for minor gaps or cracks. Such a measure can be useful in containing small leaks while a more long-lasting solution is sought.
  • Replace the Seal: If the seal is conspicuously worn out, I advise that you buy a new one. While some people might attempt this themselves, taking it to a Tesla service center or professional mechanic will ensure the process is done correctly for a weather-tight finish.
  • Routine Checks: The back window seal should be inspected occasionally, particularly as you may park outside or live in a region of heavy rain and temperature climactic variations.

In conclusion, the rear window is not just any piece of glass; it forms a crucial part of your car’s defense against water invasion. Making sure the seal is in shape is one small step you can take now to save yourself and grieve later.

  1. Collapsed or Disconnected Vent Tubes

Proper functioning vent tubes are connected from the trunk or through car panels’ circulation air so that pressure inside matches outside. These also assist in getting rid of any additional moisture or water that may build up internally.

Common Problems and Their Symptoms

  • Tubes Become Disconnected: These tubes can come out of place over time or after a knock or bump that impairs their main purpose.
  • Collapsing Tubes: The tubes can collapse with age or from material wear, restricting water and airflow.

Symptoms to Look Out For

  • Dampness or Wet Patches: More so on the sides and lower parts of the trunk.
  • Moldy or Musty Odor: The molded environment in wet conditions can give a characteristic smell.
  • Visible Water Trails: In some instances, you may observe lines or tracks of water run that form around the vent tube sections.

Advice on Checking and Resolving the Issue

  • Visual Inspection: First, one should look at where vent tubes are usually in the trunk. If you don’t know where to find it, your car’s manual or online forums are often a good place to start.
  • Reconnect or Replace: You can also try reconnecting it if you find a disconnected tube. See to it that it is well secured for future disconnections. If the tube is cracked or caved in, replacement may be appropriate.
  • Seek Professional Help: When in doubt about a particular problem or how to rectify it, seeking the advice of a Tesla service center or any trusted mechanic is always advisable. It enables them to diagnose the problem quickly and fix it accordingly so your trunk remains dry.


Water in your Tesla’s trunk could cause serious issues such as the growth of molds, bad odors, and possible harm to the interior parts of the vehicle.

Every part, from the seals around the trunk to the tail lights, vents, tubes, and drainage channels, is designed to keep the trunk dry. The first action to take in solving this problem is recognizing its signs – it may be the case of dampness, or just some moldy odor.

A routine check-up, catching and fixing small problems early can prevent big, costly ones later. It is always easier and cheaper to change a seal that has worn off or clean the blocked channels than doing the much more difficult task of remediating from mold or replacing a damaged trunk’s interior.

Lastly, you should treat your Tesla with the care it deserves. A little diligence today will go a long way to ensure your problem-free riding for the many miles ahead.


Brady Klinger-Meyers is an experienced writer and marketer with who currently writes for Teslord as well as other popular sites like MakeUseOf and Techzillo. At Teslords, he focuses on general Tesla advice with his interest being accessories and gadgets. Read our Editorial Guidelines and Fact Checking process.


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