What Causes the Sunroof Leakage in Volkswagen Tiguan?

[VanMariana]

It may be due to the sunroof drainage outlet being blocked by debris, preventing rainwater from draining out and gradually seeping into the car. Simply unclog the sunroof's drainage channel. Generally, you can open the sunroof, pour some water into the drainage channel, and check if water flows out from under the front tires. If water flows out, it indicates the drainage outlet is clear. Alternatively, you can use a towel to clean the drainage outlet, ensuring rainwater drains smoothly to the ground. There are three common explanations for sunroof leakage in the Tiguan: 1. The sunroof drainage outlet is blocked by debris, preventing rainwater from draining and causing it to seep into the car; 2. The sunroof seal is damaged, leading to poor edge sealing and allowing rainwater to enter the car; 3. There are gaps in the Tiguan's sunroof frame, causing rainwater to seep into the car, usually occurring during heavy rain.