What causes water accumulation in the Envision's cabin?

[DiLondon]

For vehicles equipped with a sunroof, focus on inspecting the sunroof drainage holes. Blocked drainage pipes can cause water leakage after car washing or during rainy days. Also, check the sunroof sealing strip for deformation, damage, or detachment. For models without a sunroof, prioritize checking the air conditioning ducts. Blocked drainage holes in the ducts can also lead to water leakage. Inspect the door and window seals, sealing strips, and door drainage holes as well. If water appears during rain or car washing, check the antifreeze to see if the heater core is leaking. Additional relevant data is as follows: Body dimensions: length 4686mm, width 1839mm, height 1691mm, wheelbase 2750mm. Introduction: The 2020 Envision is a midsize SUV with a fuel tank capacity of 66 liters, luggage compartment volume of 422 liters, and a curb weight of 1800kg.