How to Unclog the Sunroof Drain Tube of a Toyota Corolla?

[DeFinn]

Connect a syringe to an infusion tube, first extract the accumulated water from the drainage channel, then fill the syringe with clean water and inject it into the entrance of the drain tube with the outlet of the infusion tube. Use high-pressure airflow to perform pressure unclogging on the drain tube.

[CaliAnn]

I once cleared the sunroof drain pipes on my Toyota Corolla myself. After discovering a roof leak in a used Corolla I bought, I decided to tackle the issue DIY. The steps were: first inspect the sunroof edges to locate the small drain tube inlets, typically positioned at the front corners. Then I attached a soft nozzle to a bicycle pump and gently blew compressed air into the holes to dislodge any clogged leaves or debris. The key was using gentle pressure - no high-pressure air to avoid pipe damage. After blowing them clear, I water-tested the drains to confirm proper drainage near the wheel wells. The whole DIY took under 30 minutes with minimal tool costs. Small jobs like this don't always require a mechanic - attempting your own repairs saves money. Regular sunroof edge cleaning during car washes helps prevent future clogs.