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Strange water leak coming from rear mouning bracket of front seat

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Old Mar 4, 2023 | 09:41 PM
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Strange water leak coming from rear mouning bracket of front seat

2012 C250. I noticed my rear passenger side carpet was soaked. The leak was coming from the rear mounting bracket of the front seat where it is bolted to the floor in the rear.
Any ideas? Is there a water line running under the floor in that area? Your ideas would be appreciated.

Cheers
mrjazz
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Old Mar 5, 2023 | 06:49 AM
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Have any rain lately?
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Old Mar 5, 2023 | 09:05 AM
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I wasn't being snarky, but dead serious. Water is a problem you should not ignore. Hopefully this is something new and you can find the leak and fix it. The water could be coming in from anywhere and happens to collect on the back floorboard. You don't know where it has been when it got there. You may have electronics that will over time begin to corrode and cause all sorts of phantom problems.

I had a 2008 Infiniti G35 that I found water under the carpet after it wouldn't start (or stop after I got it started). We had had a lot of rain before that. I filed a claim with my insurance company and they totaled the car as flood damaged.
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Old Mar 5, 2023 | 09:06 AM
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Old Mar 5, 2023 | 01:21 PM
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Originally Posted by mrjazz
2012 C250. I noticed my rear passenger side carpet was soaked. The leak was coming from the rear mounting bracket of the front seat where it is bolted to the floor in the rear.
Any ideas? Is there a water line running under the floor in that area? Your ideas would be appreciated.

Cheers
mrjazz
I had the same issue. Water has the unique ability to pool in the lowest point and give the impression it originates from a strange location. Check the door seal on the rear passenger door, and the sunroof drains. In my case, the problem was the sunroof drains.
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