What causes water leakage behind the sunroof?
2 Answers
Water leakage behind the sunroof may be caused by a malfunction in the sunroof drainage system or improper closure of the sunroof glass. Sunroof drainage system malfunction: The sunroof drainage system does not rely entirely on sealing strips. After all, they are rubber components, and in heavy rainfall, some water may inevitably seep through the seals. This water then flows into specially designed drainage channels and is expelled from the vehicle through drainage pipes. Improper closure of the sunroof glass: Ensure the sunroof is tightly closed and carefully read the vehicle's user manual; clear the drainage pipes or adjust the drainage pipe connections. Maintenance of sunroof sealing strips: The sunroof sealing strips are located on the roof and are frequently exposed to wind and sunlight. Being rubber components, they tend to age relatively quickly.
I often encounter the problem of sunroof leaks. The main reason is likely that the sunroof's drainage holes are blocked, such as by leaves or dust, preventing water from draining and causing it to backflow and leak inside. Another common factor is the aging and hardening of rubber seals, which no longer keep rainwater out, leading to leaks into the car. I recommend you first check the drainage holes around the sunroof, usually located at the four corners of the roof. You can clean them with a small hook or compressed air. If it still leaks after cleaning, it might be due to a deformed sunroof frame or a broken drainage pipe, which would require a visit to a repair shop. Try to avoid parking under trees or frequently opening the windows to reduce debris accumulation. Remember not to delay, as wet interiors can easily mold and affect electrical safety. DIY cleaning is simple and cost-effective.
