my Tesla Model S Original (2012-2020) has a water leak when it rains

Tesla Model S Plaid/Refresh (2021-present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

548 words

Problem Statement

Learn how to diagnose and fix water leaks in Tesla Model S (2012-2020). Step-by-step guide with symptoms, diagnostic steps, and repair instructions.

Affected Component

Body/Interior

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the 12V battery before working on electrical components.
•Ensure the vehicle is stationary, and precautions are taken to avoid water damage during inspection.

Symptoms

•Water pooling in the footwells or trunk area
•Damp or wet interior carpets
•Mold or mildew odor inside the vehicle
•Water stains or corrosion on interior surfaces
•Increased humidity inside the cabin

Diagnostic Steps

1
Inspect door seals for tears or gaps.
2
Check sunroof drainage tubes for blockages or disconnections.
3
Examine the windshield and rear window seals for deterioration.
4
Look for leaks around the battery pack casing.
5
Test the cabin air filter housing for proper sealing.
6
Use a water hose to simulate rain and observe leak locations.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•Pry tool
•Adhesive cleaner
•Compressed air canister
•Scraper
•Automotive sealant
•Socket set
•Screwdriver set

Parts Required

•New door seals
•Automotive-grade sealant
•Cabin air filter (if damaged)

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Diagnostic Steps

1
Inspect door seals for tears or gaps.
2
Check sunroof drainage tubes for blockages or disconnections.
3
Examine the windshield and rear window seals for deterioration.
4
Look for leaks around the battery pack casing.
5
Test the cabin air filter housing for proper sealing.
6
Use a water hose to simulate rain and observe leak locations.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a level surface and allow it to dry before starting.

2. Inspect and Replace Door Seals

Sub-steps:
1. Remove any trim pieces around the door.
2. Carefully peel off the old door seal.
3. Clean the surface to ensure proper adhesion for the new seal.
4. Install the new door seal, ensuring it is properly aligned and pressed into place.
Tools Required: Pry tool, adhesive cleaner.

3. Clear and Inspect Sunroof Drainage

Sub-steps:
1. Open the sunroof fully.
2. Use compressed air to blow through the drainage tubes to clear any debris.
3. Check the drainage paths for blockages and ensure they are directing water away from the vehicle.
Tools Required: Compressed air canister.

4. Check Windshield and Rear Window Seals

Sub-steps:
1. Inspect the seals for any visible cracks or peeling.
2. If damaged, remove the old sealant using a scraper.
3. Apply new automotive-grade sealant around the windshield or rear window edges.
4. Allow the sealant to cure as per manufacturer’s instructions.
Tools Required: Scraper, automotive sealant.

5. Examine Battery Pack Casing

Sub-steps:
1. Remove any undercarriage covers as needed.
2. Inspect the battery pack for any signs of water intrusion.
3. If leaks are found, reseal any joints with appropriate waterproof sealant.
Tools Required: Socket set, waterproof sealant.

6. Check Cabin Air Filter Housing

Sub-steps:
1. Remove the cabin air filter cover.
2. Inspect the housing for any gaps or misalignments.
3. Reinstall the cover ensuring a tight seal, or replace if damaged.
Tools Required: Screwdriver set.