How to Unclog the Sunroof Drain Pipe on a Classic Focus?

[LeLevi]

This situation depends on whether it's the front drain pipe or the rear drain pipe that's clogged. If it's the front drain pipe that's clogged, open the sunroof and use high-pressure air to blow at the two front corners of the sunroof. This will clear the sunroof drain pipe. If it's the rear two drain pipes that are clogged, then you'll need to remove the interior headliner before you can use high-pressure air to blow them clear.

[DiAliyah]

Last time my car got flooded, I found out it was because the sunroof drain was clogged. Here's a DIY trick: First locate the drain hole under the A-pillar, use a syringe to draw half a tube of warm water mixed with dish soap, and slowly inject it to soften the sludge. Then connect a rubber tube to a bicycle pump and gently pump air into the drain—be careful not to use too much force or you might disconnect the tube. Finally, take an old phone charger cable, strip out the thin copper wire inside, and slowly feed it into the pipe, twisting it a few times to pull out the debris. After unclogging, pour half a bottle of mineral water to test the flow rate. It's recommended to clean it every three months, especially for cars parked under trees—be more diligent with those.