how to fix a leaking sunroof on Toyota Highlander Third Generation (2014-2019)

Solution

1. Preparation

• Gather necessary tools and parts for the repair.
• Park the vehicle on a level surface and ensure that the engine is off.
• Disconnect the battery to prevent any electrical issues.

2. Inspect and Clean Drainage Channels

• Tools Required: Vacuum with a narrow attachment, soft brush, water source.
• Sub-steps:
  1. Locate the drainage channels at each corner of the sunroof.
  2. Use the vacuum to remove any debris clogging the drains.
  3. Use a soft brush to clean the channels gently.
  4. Pour a small amount of water into the sunroof area and check if it flows freely through the drains.

3. Replace Sunroof Seal

• Tools Required: Trim removal tool, adhesive cleaner, new sunroof seal.
• Sub-steps:
  1. Use a trim removal tool to carefully detach the old sunroof seal from its channel.
  2. Clean the surface of the channel with adhesive cleaner to ensure proper adhesion of the new seal.
  3. Measure and cut the new sunroof seal to fit the channel, ensuring a snug fit.
  4. Press the new seal firmly into place, ensuring there are no gaps or overlaps.

4. Test Sunroof Functionality

• Tools Required: None.
• Sub-steps:
  1. Reconnect the battery.
  2. Operate the sunroof to ensure it opens and closes correctly.
  3. Test the sunroof by pouring water over it to verify that no leaks occur.