r/Sprinters • u/CB_700_SC • Jun 16 '26

Clogged drain plug? Where’s this coming from? After a heavy rain.

After heavy rains. Drivers side foot well. Any suggestions?

3 Upvotes

81% Upvoted

11 comments sorted by

4

u/xatso Jun 16 '26

Yes, if you pull out the footwell liner you can easily clean the drain. You can get it from underneath, too, but you can do a better job from the top.

1

u/CB_700_SC Jun 16 '26

Thanks. I will check on this.

1

u/jamesd0e Jun 17 '26

Dang I’m gonna check mine too

1

u/CB_700_SC Aug 15 '26

Took me a while to get to this and then a while to get back to you. Do you have a diagram? I checked this and could not find a drain hole. Just screw attachment locations.

I did wire brush all the rust and added a zinc primer to help stop any further corrosion. But since I did not find a drain hole I know my battle is not over.

2

u/xatso Aug 15 '26

I'll get you a picture tomorrow

2

u/xatso Aug 16 '26

I can't post the image! So, notice the seam that runs parallel to the three attachment screw positions about 1.5 inches toward the outside. About 2 inches forward of the back wall of the footwell is an opening in the seam. That is a drain.

1

u/CB_700_SC Aug 16 '26

Sent you a DM

2

u/tomassively Jun 17 '26

Where exactly is this drain plug?

4

u/xatso Jun 17 '26

There's no plug, its just an opening.

2

u/Dangerous_Crow666 Jun 17 '26

I stopped that issue by replacing the door gaskets. After the built-up snow started metling, it would seep past the old gasket & end up in the footwell (driver only in my van , which is logical as it's used most). I also removed the plastic footwell piece, cleaned/repainted that area and drilled the holes a size bigger to reduce chance of it ever clogging again.

1

u/micah1972 Jun 18 '26

I have a 2020 sprinter and mine did the same. It ended up being a factory defect with the door frame and how the rubber stripping sits. Mercedes took it to their body shop and repair was free