A »To diagnose sunroof drainage issues, inspect the sunroof's drain tubes and check for blockages. Use compressed air or a plumbing snake to clear debris. Inspect the sunroof's gasket and drain channels for damage or misalignment. Repair or replace damaged components, and test the system to ensure proper drainage.

A »To diagnose sunroof drainage issues, check for water leaks inside the car. Open the sunroof and pour a small amount of water into the drains to see if it flows freely. If not, use compressed air or a flexible wire to clear blockages. Regularly clean debris from the sunroof area to prevent future clogs. Always ensure the sunroof is securely closed after checking.

A »To diagnose sunroof drainage issues, inspect the sunroof's drain tubes and check for blockages. Use compressed air or a plumbing snake to clear debris. Inspect the sunroof's gasket and surrounding areas for damage. Repair or replace damaged components, and test the drainage system to ensure proper function.