How to Solve the Blockage of the Sunroof Drain Hole in the Tiguan?

[OMaddox]

Tiguan sunroof drain hole blockage solutions are as follows: 1. "Enema" method: Use a syringe connected to an infusion tube to flush the drain pipe, which should clear the blockage. Practical experience shows this method is highly effective and straightforward. Before performing the "enema," use the syringe to remove water from the sunroof drain channel to prevent water from flowing into the car during the process. 2. Air pressure method: Go to a tire changing station, take an air gun, and aim it at the drain holes of the two front drain pipes inside the sunroof. Use high-pressure air to blow through the drain pipe. Remember to use a rag to block any splashes to avoid dirty water spraying onto yourself or the car's interior. Be cautious not to use too strong air pressure, as it may cause the rubber joints and drain pipes to detach, leading to continued leakage issues.