What are the causes of a panoramic sunroof leaking?
2 Answers
The causes of a panoramic sunroof leaking are as follows: 1. Drainage system issues: There is a recessed area around the sunroof, and if the drainage is poor, water can enter the interior. The main causes of leaks are the two drainage pipes in the A-pillars. For example, aging or damaged rubber seals at the connection points can lead to leaks. 2. Clogged drainage outlets: If the sunroof is leaking, the first step is to check whether the drainage outlets are clogged with dust. Most sunroof leaks are caused by clogged drainage outlets. There are no special maintenance requirements for a car sunroof; just regularly inspect the surrounding seals for damage and check the lubrication condition of the tracks. If the cause cannot be identified, it is recommended to take the car to a 4S repair shop and have a technician test the sunroof by pouring water over it to locate the leak before performing repairs.
I have a car with a panoramic sunroof that had a leaking issue last year, which soaked the interior and was quite troublesome. The main causes of leaks are aging or damaged seals—the rubber material hardens and cracks over time, allowing rainwater to seep through the gaps. Another major issue is clogged drainage holes, where accumulated dust, leaves, or small insects block the holes, causing water to backflow into the car. I’ve seen online that many people experience clogs due to parking under trees, where fallen leaves get stuck in the drainage channels, requiring tools like thin rods or air blowers for cleaning. Checking the drainage system is simple—you can regularly inspect the channels for blockages and address any signs of standing water promptly. Poor alignment during installation can also cause leaks, though this is less common. In short, prevention is better than cure—it’s advisable to clean around the sunroof every quarter to avoid minor issues turning into major repairs.
