How to Unclog the Two Drain Holes at the Back of the Sunroof?
3 Answers
Use an air pump gun, aim it at the drain holes of the two front drainage pipes inside the sunroof, and blow through the pipes with high-pressure air. Use a rag to block slightly to avoid excessive air pressure. Use a syringe to flush the drainage pipes, which can effectively unclog them. Practical experience has proven this method to be highly effective and easy to implement.
I often tinker with my car, and clearing the two drainage holes behind the sunroof is actually quite simple. First, locate the holes, usually at the rear corners of the roof—you can feel for them or use a phone flashlight to confirm. Then, take a thin copper wire or electrical wire, not too long, and gently insert it, twisting a few times to pull out any debris blocking the hole. If the hole is too tight, don’t force it to avoid cracking the plastic tube. Next, use compressed air to blow it out lightly or try sucking with a straw nozzle. Finally, pour some water to test if it flows smoothly. Preventing clogs is key—avoid parking under trees to reduce leaves and dust, which can lower the cleaning frequency to once a quarter. Regular checks can save you from leak repairs. If you’re still unsure, you can easily buy specialized tools online. The whole process takes about 15 minutes—it’s not difficult but requires careful handling, with safety as the top priority.
Last time my SUV's sunroof leaked and soaked the seats, I quickly unclogged the drainage holes to fix the issue. Those two holes are located at the rear end of the roof and are usually covered, making them easy to overlook. I simply used a soft plastic straw or an old fishing line, gently inserted it, and moved it back and forth a few times to remove the accumulated sand and leaves. Then, I slowly poured water from a bottle to flush it out, ensuring the water flowed out from under the car to confirm it was clear. If the clog is severe, you can first use a brush to clean the exterior before tackling the inside. Experience has taught me not to rush or use excessive force, as it could damage the pipes and lead to costly repairs. Additionally, parking in a clean spot to reduce debris buildup is basic common sense—after all, cars, like people, need regular maintenance. Handling such minor tasks yourself is cost-effective, saving you the expense and wait time of going to a shop, with immediate results worth promoting.
