Mercedes Benz W204 Rear Passenger Floor wet and can hear the water moving while drive
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2014 Mercedes Benz C350 W204
Mercedes Benz W204 Rear Passenger Floor wet and can hear the water moving while drive
I have a 2014 Mercedes Benz C350 and only the rear passenger seat floor is wet. Whenever I accelerate or brake the vehicle I can hear a puddle of water moving under the floor. What can I try to drain the water out first? I did some googling and it could be the AC drain or sunroof drain clogged. Not sure the exact locations of those? Any DIY with Pics or Videos would be super helpful.
PS: Not super handy with cars.
Thanks
PS: Not super handy with cars.
Thanks
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Joined: Oct 2013
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From: Brooklyn, NY
2014 Mercedes C300
I had this problem with my 2010 C300. Water was coming in from the passenger door. If you lift up the interior carpet you can find a drain for the water. I strongly suggest draining because you have electronics there and the water will kill them all. Find out where the leak is and fix.
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Joined: Oct 2020
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2014 Mercedes Benz C350 W204
Thanks for the reply.
I am not too familiar with removing the car carpet... is there any instruction on how to access it? Thanks
From googling I also tried cleaning the sunroof drain with an unclogger pipe solution. So now the water quickly drains once I pour water into the sunroof holes. However, on the driver side, the water drains from the front holes near the front wheel and back hole near the back wheel but on the passenger side, it only drains from the front wheel. There is no water coming out from the rear passenger wheel side. I am not sure if there is a drain hole on the rear passenger side or not?
I also checked the holes in front of the car. The right and left side pouring the water from the hood area seems to be fine.
The rear carpet on the passenger side is not getting wet when I pour water into the sunroof drain pipes. Is there a diagram of the car somewhere to see where are all the drain pipes?
How can I access the drains from the bottom of the car if I just lift it with a regular jack that comes with the car and what's the best way to verify that the rear windshield seal, trunk seal, and door seal is still good?
Thanks a lot!
I am not too familiar with removing the car carpet... is there any instruction on how to access it? Thanks
From googling I also tried cleaning the sunroof drain with an unclogger pipe solution. So now the water quickly drains once I pour water into the sunroof holes. However, on the driver side, the water drains from the front holes near the front wheel and back hole near the back wheel but on the passenger side, it only drains from the front wheel. There is no water coming out from the rear passenger wheel side. I am not sure if there is a drain hole on the rear passenger side or not?
I also checked the holes in front of the car. The right and left side pouring the water from the hood area seems to be fine.
The rear carpet on the passenger side is not getting wet when I pour water into the sunroof drain pipes. Is there a diagram of the car somewhere to see where are all the drain pipes?
How can I access the drains from the bottom of the car if I just lift it with a regular jack that comes with the car and what's the best way to verify that the rear windshield seal, trunk seal, and door seal is still good?
Thanks a lot!
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Joined: Jul 2020
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c250
2013 C250
I have terrible leaks that require a large wet dry vacuum cleaner.
A search online revealed an ongoing issue for any years.
I have large amount of water inside the driver, passenger both front and rear.
My most recent leak November 2020 water is getting inside the trunk!!
I constantly clean the two front holes for the Sunroof, the rear holes are impossible to locate.
The two small drains located under the Windshield Wiper bay get clogged frequently causing water to be directed inside the driver foot well.
Mercedes Benz should be embarrassed.
I have terrible leaks that require a large wet dry vacuum cleaner.
A search online revealed an ongoing issue for any years.
I have large amount of water inside the driver, passenger both front and rear.
My most recent leak November 2020 water is getting inside the trunk!!
I constantly clean the two front holes for the Sunroof, the rear holes are impossible to locate.
The two small drains located under the Windshield Wiper bay get clogged frequently causing water to be directed inside the driver foot well.
Mercedes Benz should be embarrassed.
