Water leaks under carpet
Thread Starter
Newbie
Joined: Apr 2024
Posts: 6
Likes: 0
C 180 CGI Coupe
Water leaks under carpet
Hi.
When I removed front drivers and passenger carpet I noticed rust and water on drivers side floor. Passenger side is dry and nice.
Some time I was driving without carpet trying to pinpoint where the leak is.
What I tried:
1. Cleaned all three drain holes on plastic part under windshield. Made sure that the water was pouring out from the bottom of a car when I poured it on windshield.
2. Poured water from a hose onto the windshield and drivers door.
3. Poured with pressure water the whole car, especially front part - door, windshield, sill.
4. I was in workshop where they also couldn't determine where the leak is. They offered to disassemble something under the hood and clean some drains, but it seems that they are not sure.
None of this worked, the car was completely dry inside during all experiments.
But after rainy day I found water on the floor again.
Any ideas?
Also note, that my car doesn't have sunroof
and it has original windshield (production year same as others).
When I removed front drivers and passenger carpet I noticed rust and water on drivers side floor. Passenger side is dry and nice.
Some time I was driving without carpet trying to pinpoint where the leak is.
What I tried:
1. Cleaned all three drain holes on plastic part under windshield. Made sure that the water was pouring out from the bottom of a car when I poured it on windshield.
2. Poured water from a hose onto the windshield and drivers door.
3. Poured with pressure water the whole car, especially front part - door, windshield, sill.
4. I was in workshop where they also couldn't determine where the leak is. They offered to disassemble something under the hood and clean some drains, but it seems that they are not sure.
None of this worked, the car was completely dry inside during all experiments.
But after rainy day I found water on the floor again.
Any ideas?
Also note, that my car doesn't have sunroof
and it has original windshield (production year same as others).
Last edited by alex_lv; May 16, 2024 at 03:26 AM.
Junior Member
Joined: May 2018
Posts: 44
Likes: 15
From: Sydney, Australia
2007 clk350 coupe, 2013 C250 coupe, 2013 C250 wagon
Alex, some of the drains from the scuttle area end up in plastic tubes behind the rear part of each front wheel arch plastic liner. When I had a similar problem I made sure these were cleared out. They have one-way end pieces that get clogged by debris from leaves/bugs. Removing the plastic liner involves removing the front wheel and carefully removing several plastic clips and a few nuts. Even if it doesn't fix your problem you will have eliminated another possibility. It will also give you a good view around the base of the firewall/floor area to see if anything else is amiss. Good luck.
Member
Joined: Dec 2023
Posts: 217
Likes: 74
From: TN
2013 w204 c250 coupe & 2001 Dodge Ram 2500 24v Cummins
Hi.
When I removed front drivers and passenger carpet I noticed rust and water on drivers side floor. Passenger side is dry and nice.
Some time I was driving without carpet trying to pinpoint where the leak is.
What I tried:
1. Cleaned all three drain holes on plastic part under windshield. Made sure that the water was pouring out from the bottom of a car when I poured it on windshield.
2. Poured water from a hose onto the windshield and drivers door.
3. Poured with pressure water the whole car, especially front part - door, windshield, sill.
4. I was in workshop where they also couldn't determine where the leak is. They offered to disassemble something under the hood and clean some drains, but it seems that they are not sure.
None of this worked, the car was completely dry inside during all experiments.
But after rainy day I found water on the floor again.
Any ideas?
Also note, that my car doesn't have sunroof
and it has original windshield (production year same as others).
When I removed front drivers and passenger carpet I noticed rust and water on drivers side floor. Passenger side is dry and nice.
Some time I was driving without carpet trying to pinpoint where the leak is.
What I tried:
1. Cleaned all three drain holes on plastic part under windshield. Made sure that the water was pouring out from the bottom of a car when I poured it on windshield.
2. Poured water from a hose onto the windshield and drivers door.
3. Poured with pressure water the whole car, especially front part - door, windshield, sill.
4. I was in workshop where they also couldn't determine where the leak is. They offered to disassemble something under the hood and clean some drains, but it seems that they are not sure.
None of this worked, the car was completely dry inside during all experiments.
But after rainy day I found water on the floor again.
Any ideas?
Also note, that my car doesn't have sunroof
and it has original windshield (production year same as others).
this happened to me when I bought my c250 coupe, it ended up being the windshield. The seal eventually goes bad and leaks.
I had a new MB windshield put on through insurance and the dealership technician said the seal was completely gone. You could actually push up on the windshield and it would move.
I tried cleaning all the drains and everything but nothing worked until I had the windshield replaced. It’s been over a year and no leaks or water inside anymore.
ant
Thread Starter
Newbie
Joined: Apr 2024
Posts: 6
Likes: 0
C 180 CGI Coupe
I finally found where the leak is.
I'll upload video what I found. I'm sorry that comments will be in Russian, but i guess everything will be clear anyway.
Now I need advice - what is this black thing, and why water leaking from it? Has anyone encountered this?
I'll upload video what I found. I'm sorry that comments will be in Russian, but i guess everything will be clear anyway.
Now I need advice - what is this black thing, and why water leaking from it? Has anyone encountered this?
