What Causes a Car Sunroof to Leak?

1 Answers
VanPaul
07/29/25 1:16pm
Car sunroof leaks may be related to the sunroof glass not being properly closed or a malfunction in the sunroof drainage system. Here is the relevant information: Sunroof leakage: There are generally two scenarios for sunroof leaks. One is the blockage of the sunroof drainage channel due to small sand particles or dust. The other is the displacement or "lifting" of the sunroof sealing rubber strip. Therefore, it is advisable to regularly clean the sunroof to maintain the cleanliness around the drainage channel. Additionally, during routine car washes, use high-pressure air blasting equipment directed at the drainage pipes for cleaning. Failure of car waterproof seals leading to leaks: Leaks often occur at the openings of doors or the trunk, primarily due to deteriorated, aged, or broken rubber waterproof seals, allowing rainwater to seep in. Reattaching the seals with specialized adhesive can completely prevent leaks. If rainwater is seeping in around the doors, it is mostly due to issues with the surrounding waterproof seals. Check for any breaks or peeling.
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