my Toyota Corolla E210 (2019-2024) has water leaks inside, what's causing it?

Solution

1. Preparation

• Tools Required:
  • Flashlight
  • Screwdriver set
  • Trim removal tools
  • Water hose
• Safety Warnings:
  • Ensure the vehicle is parked on a level surface.
  • Disconnect the battery if working near electrical components.

2. Inspect and Replace Door Seals

• Sub-steps:
  1. Open all doors and visually inspect the rubber seals for cracks or tears.
  2. Gently pull on the seals to check for any detachment from the door frame.
  3. If damaged, remove the old seal by peeling it off the adhesive.
  4. Clean the surface where the new seal will adhere.
  5. Install new seals by pressing them firmly into place, ensuring a snug fit.

3. Clear Sunroof Drainage Tubes

• Sub-steps:
  1. Open the sunroof fully.
  2. Locate the drainage tubes at the corners of the sunroof frame.
  3. Use compressed air or a flexible wire to clear any blockages in the drainage tubes.
  4. Test the drainage by pouring a small amount of water into the sunroof channel to ensure it flows freely out of the vehicle.

4. Reseal Windshield

• Sub-steps:
  1. Inspect the windshield seal for gaps or deterioration.
  2. If necessary, carefully remove any trim pieces surrounding the windshield.
  3. Apply a bead of automotive silicone sealant along the edge of the windshield.
  4. Smooth the sealant with a finger or tool to ensure complete coverage.
  5. Allow the sealant to cure as per manufacturer's instructions before exposing to water.

5. Check Cabin Air Filter Housing

• Sub-steps:
  1. Locate the cabin air filter compartment, usually found behind the glove box.
  2. Remove the glove box to access the filter housing.
  3. Inspect the filter and housing for proper sealing; replace if damaged.
  4. Reassemble the glove box after ensuring the housing is sealed correctly.

6. Inspect and Replace Trunk Seal

• Sub-steps:
  1. Open the trunk and visually inspect the rubber seal around the trunk lid.
  2. Check for any signs of wear, cracks, or detachment.
  3. If damaged, remove the old trunk seal and clean the adhesive surface.
  4. Install a new trunk seal, pressing it firmly into place.