How to unclog the sunroof drainage pipe of the RX5?
2 Answers
After clogging occurs, you can use a 6mm iron wire to poke through the four drainage holes, then pour water to test until the water is drained. Utilize high-pressure airflow to perform pressure unclogging on the drainage pipe. Be careful not to set the air pressure too high.
I previously encountered a clogged sunroof drain tube issue when driving my RX5, where water leakage nearly soaked the seats. After several attempts, I found some effective DIY unclogging methods. The most common cause is the accumulation of leaves or dust at the drain outlet, preventing water from flowing out. The unclogging process is quite simple: First, locate the drain tube outlet—usually a small hole near the wheel or below the door. Then, use a bicycle pump or compressed air to blow air backward through the drain opening to push out debris. If blowing air doesn’t work, carefully insert a thin wire or plastic cable to gently poke through, but avoid excessive force to prevent damaging the tube. Finally, pour a bucket of water into the sunroof track to test if drainage is smooth. I recommend regularly cleaning dirt from the sunroof gaps after parking under trees to prevent clogs. If the issue persists, it’s best to visit a repair shop and let a professional handle it to avoid causing further damage.
