Jun 15, 2015, 02:07 PM
Last edit by: IB Advertising
See related guides and technical advice from our community experts:
Browse all: Interior Guides
- Mercedes-Benz C-Class: Why is My Interior Rattling?
Guide to diagnose trouble and recommended solutions
Browse all: Interior Guides
Annoying rattle in my c300
Thread Starter
Newbie
Joined: Jul 2010
Posts: 4
Likes: 0
2009 c300 sport
Annoying rattle in my c300
passenger side in the back there is a very annoying rattle, driving me nuts and i jsut got the car, i thought it was a speaker but i brought the car in and they ran test its not
any help? thanks
any help? thanks
MBWorld Fanatic!
Joined: Oct 2008
Posts: 2,601
Likes: 28
From: Atlanta, GA
2008 C300 Sport 6 Speed Manual, 1953 Chevy Bel-Air, 2015 Audi allroad, 1963 Chevy Apache
Welcome to the forum. The good news is that these cars are proving to be quite solid so once you get this issue sorted, you should be golden...
If the dealer can't find the issue, be sure to ask the SA to allow you to ride with them or the tech to help replicate the exact conditions that causes the rattle.
If the dealer can't find the issue, be sure to ask the SA to allow you to ride with them or the tech to help replicate the exact conditions that causes the rattle.
Trending Topics
Newbie
Joined: Apr 2011
Posts: 4
Likes: 0
2008 C200 KOMPRESSOR W204
Txs Carsy. This has been a really annoying issue since I have the car.
The noise is a metal clicking coming from the rear center seat belt mechasism. It has a couple of iron little ***** who keeps the seat belt tight in case of accident. I had the car three times in the MB dealer and they are putting more and more foam, but the noise wil be there until they change the system... And the factory didn't authorize that.
Anyone with the same problem. They told me here that is a common problem in the W204.
I really miss my W203. It had much better material, finish and riding!
The noise is a metal clicking coming from the rear center seat belt mechasism. It has a couple of iron little ***** who keeps the seat belt tight in case of accident. I had the car three times in the MB dealer and they are putting more and more foam, but the noise wil be there until they change the system... And the factory didn't authorize that.
Anyone with the same problem. They told me here that is a common problem in the W204.
I really miss my W203. It had much better material, finish and riding!
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
MBWorld Fanatic!
Joined: Oct 2010
Posts: 1,128
Likes: 19
From: Acapulco Mexico
2010 C300 Sport
Here is a link for rattles and noises, truly inspired:
http://www.benzworld.org/forums/w204...anel-flex.html
http://www.benzworld.org/forums/w204...anel-flex.html
Member
Joined: Apr 2011
Posts: 99
Likes: 7
From: Bradenton, FL
'12 E550 4M, '14 ML5504M
There's another tread on here that talks about a rear shelf noise, and it was traced back to some kind of filter canister that resonates with the speaker. Can't find the tread though. Sorry.
Super Member
Joined: Feb 2010
Posts: 757
Likes: 1
From: LI, NY, U.S.A.
2013 GLK 350 4M (Iridium Silver), 2010 E350 Coupe (Iridium Silver)
MBWorld Fanatic!
Joined: Jul 2007
Posts: 1,904
Likes: 29
S350 BT 4MATIC
I had an irritating noise of unknown origin inside the car in the front. It took me a while, but I finally figured it out. It was my rear view mirror! I have just pushed the shell back in place, but I am gonna have to take a look and really fix it soon. But I got to tell you all, It only occurred while I was driving on the highway, and it seems like it was coming from the passengers side of the interior, and it was, just on the rear of the mirror 
LOL!
LOL!
Newbie
Joined: Apr 2011
Posts: 4
Likes: 0
2008 C200 KOMPRESSOR W204
Well... after 4 days and $ 200... the noise is still there, they and I know that it's from the rear center seat belt system, and the official answer is: we are sorry but it's a common problem and it has no solution... just unbelievable. I don't have more time to spend with the MB dealer here, and this is my third C class since 2004, and I'm very dissapointed...
Thanks for all your suppoft guys!!!
Thanks for all your suppoft guys!!!
Junior Member
Joined: Nov 2010
Posts: 25
Likes: 0
2014 GLK350
i came to a conclusion that its the bolt that vibrates through the seat belt machinism. Im planning on drimmeling the opening on the seat belt holder to place a large rubber garment and then bolting it to see if it takes that noise away.
will post pics
will post pics
MBWorld Fanatic!
Joined: Aug 2007
Posts: 1,914
Likes: 5
LOADED 08' C350 & 14' GLK-350 Diamond White (P1, MM, AMG Pkg, Ln Trkng, Htd Sts, Keylss Go)
its most likely the plastic speaker grill piece in the back shelf... put felt tape under it and reseat it... thats what mine was back in 2007 when the car was new off the lot, dealer fixed it
Newbie
Joined: Apr 2011
Posts: 4
Likes: 0
2008 C200 KOMPRESSOR W204
It's the rear belt system. You can put all the foam you want but it's impossible to repair it. Finally, I'm buying more and more music on iTunes... It helps not to listen the noise. Txs guys!!!
MBWorld Fanatic!
Joined: Oct 2009
Posts: 2,071
Likes: 20
Nissan GT-R BE / '12 Ducati-1199 Panigale S / '12 C300-4M Loaded/GLK350-4M Loaded
These rattles occur mostly in vehicles that sit outside for the summer and start to "squeak" because the parts have expanded and are chaffing against each other, then start to "buzz or rattle" in the cold winter months as the materials shrink.... the other problem is that Benz's fit their interiors panels real tight from the factory, the fit and finish is among the very best in the industry, so there's very little wiggle room for expansion and contraction.
The only real fix is to detect the area of the noise, dismantle it, shave it, lube it, secure it (if it's a wiggly cable with a zip-tie) or foam it.
The only real fix is to detect the area of the noise, dismantle it, shave it, lube it, secure it (if it's a wiggly cable with a zip-tie) or foam it.
Last edited by MBRedux; Jan 10, 2012 at 02:01 PM.
Super Member
Joined: Jan 2011
Posts: 534
Likes: 1
From: NJ
2008 C350 Sport
Well... after 4 days and $ 200... the noise is still there, they and I know that it's from the rear center seat belt system, and the official answer is: we are sorry but it's a common problem and it has no solution... just unbelievable. I don't have more time to spend with the MB dealer here, and this is my third C class since 2004, and I'm very dissapointed...
Thanks for all your suppoft guys!!!
Thanks for all your suppoft guys!!!
Newbie
Joined: Jan 2012
Posts: 1
Likes: 0
C300 4matic
Guys.... I had the same rattle. Swore it was the seatbelt assembly. Turns out it was the grab handles above each door. Put some sticky felt where the handle hinges to the base. Do it on all four handles and that should be the end of the annoying rattle.
Newbie
Joined: Feb 2012
Posts: 8
Likes: 0
2009 c300 4matic palladium silver, grey/black mb tex. Packages include 057,413,731,p02,320,333,792
what I found
I have a 2009 c300 and if you get in the trunk and under the deck lid and bang your fist on the steel under the deck lid I discovered the mechanism that I think is used for remote trunk opening rattles a bit with that annoying noise a person hears on and off, what I hate is its not consistent so of course hard to find. If you get in the trunk bang your fist by that mechanism and then take your other hand and or finger and support it, you wont hear that vibration or sound. I'm **** and just putting my two cents in but that might be a issue
Check out the pic of my little rattle over certain bumps and bass.
Check out the pic of my little rattle over certain bumps and bass.
