How to Deal with Clogged Sunroof Drain Holes in BYD S7?

[OOwen]

Using a syringe connected to an infusion tube to flush the drain pipe should be able to clear the blockage. This method is very effective and simple to perform. Go to a tire replacement location, take an air gun, aim it at the drain holes of the two front drain pipes inside the sunroof, and use high-pressure airflow to blow through the drain pipes.