Sunroof Draining Guide-NMS Passat

Hello there. I found many threads when I searched for sunroof draining but none of them was for NMS Passat. So,I was curious if we need to follow different steps in order to get job done?
Any service manual pdf-picture?
Hope many of us will benefit from this thread as dealer quoted +100$ for this job.
Thanks!

Is this preventative/maintenance or a procedure to fix a faulty sunroof?

So far so good with mine, but I'd like to keep it that way.

look a black tube right in front of the firewall, below windshield, way, way back in the corners of the engine compartment. There are 2, one for driver and passenger side drains. You have to remove the black plastic cover below the windshield to see and gain access. Fish a weedwacker line down from the sunroof, or up from the drain in the corner of the engine bay, and floss. Or do a test to see if water is draining. If so, no need to floss.

I am currently dealing with the same problem on the drivers side, I fed some trimmer line down the tube and it stops where the a-pillar meets the fender so I know I have a clog just trying to figure out how to clear the clog cause the trimmer line isn’t working.

saucer said:

Is this preventative/maintenance or a procedure to fix a faulty sunroof?

So far so good with mine, but I'd like to keep it that way.

Click to expand...

Well, dealer recommended it with 40k mile service and told me that it is better to drain it or check if everything is fine.

Tom in PT said:

look a black tube right in front of the firewall, below windshield, way, way back in the corners of the engine compartment. There are 2, one for driver and passenger side drains. You have to remove the black plastic cover below the windshield to see and gain access. Fish a weedwacker line down from the sunroof, or up from the drain in the corner of the engine bay, and floss. Or do a test to see if water is draining. If so, no need to floss.

Click to expand...

I will try this when the weather gets better,thanks for your advice!

I chased a wet floor issue on my 2012. I dont know anything about a black tube right in front of the firewall, below windshield, way, way back in the corners of the engine compartment.

I poured water down the sunroof drain and it flowed fine out of a big rectangular opening. My suspicion was leaking firewall caulked joints. I sprayed a garden hose on the inner wheelwell area and the inner floor bulk head filled with water. I drilled the holes in the floor and problem solved.

Wet floor is no fun.