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

Electrical help?

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Old Mar 15, 2024 | 06:20 PM
  #1  
Zsullivan35's Avatar
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From: Mississippi
08 Benz c300
Electrical help?

Hi i made a post a few months back of having some random electrical issues after a heavy rain while driving like
a bunch of dash lights on, loss of blinkers heated seats etc. tested the prefuse box and it was fine . Someone recommended checking the Sam’s for water And my problem went away and i forgot about it . Today after a heavy rain i parked and left in my other vehicle and noticed only my tail lights were on . When i got home i checked both Sam’s for water and i noticed leaking on front and rear Sam .

On the rear Sam i see the water is coming from the push pin holes around the black trim I’ll picture below .

on the front Sam cover i see leakage from the driver windshield wiper arm .


So my questions for making this thread are

1:
im going to silicone around the push pins to stop leaks in the rear

2: for the front, can i replace the bottom cover of the windshield wiper ?? I can’t find a link to the grommet anywhere but mine is shot






Last edited by Zsullivan35; Mar 15, 2024 at 07:45 PM.
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Old Mar 16, 2024 | 10:32 AM
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W204 2010 C300 4matic Sport M272
My trunk was leaking and I replaced the pins. Very easy to do and no more leaking. the part# 0009915940

Heres a thread I made on it: https://mbworld.org/forums/c-class-w...ar-window.html

You can get the Mercedes pins which are expensive or aftermarket which i went with. Heres an example:



Last edited by TimC300; Mar 16, 2024 at 10:35 AM.
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Old Mar 16, 2024 | 10:48 AM
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W204 2010 C300 4matic Sport M272
Heres a wiper diagram











Last edited by TimC300; Mar 16, 2024 at 10:51 AM.
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Old Mar 16, 2024 | 11:04 AM
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W204 2010 C300 4matic Sport M272
I found the trim piece diagram. I think the seals come with the trim, not sure they are sold seperatly.





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