What Causes a Car Sunroof to Leak?

[HavenAnn]

Car sunroof leakage may be related to the sunroof glass not being properly closed or a malfunction in the sunroof drainage system. Here is relevant information: 1. Sunroof rainwater leakage: There are generally two scenarios for sunroof leakage. One is that small sand particles or dust in the sunroof drainage channel cause blockages. The other is that the sunroof sealing strip has been "lifted" or displaced. Therefore, it is advisable to regularly clean the sunroof to maintain cleanliness around the drainage channel. Additionally, during routine car washes, use high-pressure air jet equipment directed at the drainage pipes for air jet treatment. 2. Car waterproof seal failure leading to rainwater leakage: Rainwater leakage often occurs at the openings of doors or the trunk. The primary cause in such cases is usually the waterproof seal, i.e., poor-quality, aged, or cracked rubber waterproof strips, allowing rainwater to seep in. Reapplying adhesive specifically designed for waterproof strips can completely prevent leakage. If rainwater is seeping in around the door, the issue is mostly with the surrounding waterproof strips; check for any cracks or peeling.