Why is the sunroof of the Tiguan leaking?
2 Answers
The reasons for the sunroof leakage in the Tiguan are as follows: Sunroof drain outlet blocked by debris: This prevents rainwater from draining out, causing it to gradually seep into the car. Use a towel to clean the drain outlet thoroughly to ensure rainwater drains smoothly to the ground. Damaged sunroof seal: This results in poor edge sealing, allowing rainwater to enter the car. For a damaged sunroof seal, the solution is to replace it with a new one. Gaps in the Tiguan sunroof frame: Gaps in the sunroof frame allow rainwater to seep into the car. If the vehicle is still under warranty, the most straightforward solution is to replace the sunroof frame.
I've encountered the issue of my Tiguan's sunroof leaking multiple times, usually due to clogged drainage holes. The small tubes in the corners of the sunroof accumulate dust, leaves, or small insects, causing water to backflow. Aging sealing strips are also a common problem—when the rubber cracks and doesn't seal properly, rainwater seeps into the car. I recommend checking it yourself first: use a thin wire to gently poke the drainage holes, but avoid applying too much force to prevent damaging the pipes. Rinsing the pipes with soft water is also a good solution. If the leak persists, take it to a repair shop for professional help—they have tools like air blowers to clear blockages or can replace the sealing strips. Don't ignore this issue, as it can lead to moldy interiors, electrical shorts, and higher repair costs, not to mention unsafe driving in the rain. Regular maintenance of the sunroof system is key. Parking away from trees to reduce debris buildup has saved me a lot of trouble and money. If the leak is severe, pull over safely, turn on your hazard lights, and prioritize safety.
