C-Class (W204) 2008 - 2014: C180K, C200K, C230, C280, C300, C350, C200CDI, C220CDI, C320CDI

Water entry points ??

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Old Oct 3, 2024 | 10:02 AM
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08 Benz c300
Water entry points ??

Hi , just had to replace the can bus under the floor for the second time . The first time no water was found in floor boards , second time a little water was present under driver and passengers sides .

so my question or hope is that someone here can help me with a list of potential leak points ?

i know the sunroof drains are a big one , I’m going to clean them out this weekend with compressed air , where should they drain from once clean ?

i changed the wiper cowl because it was rotten around the wiper arm (luckily no Sam damage)

any other locations ? Any tips ?
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Old Oct 3, 2024 | 11:17 AM
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2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
The sunroof drains drain behind the front wheel well liners. You may want to remove the plugs in the floorboards so water doesn't collect. The plastic trays under the car will keep water from splashing in.

https://mbworld.org/forums/c-class-w...er-s-side.html


Last edited by JettaRed; Oct 3, 2024 at 11:32 AM.
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Old Oct 3, 2024 | 11:25 AM
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You may also want to scan for any codes.

https://mbworld.org/forums/c-class-w...78-solved.html

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Old Oct 3, 2024 | 02:40 PM
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Ive never been able to see the drains though never had the wheel well liners off either.


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