Exhaust Rattle C63S coupe.
Thread Starter
Senior Member
Joined: Feb 2007
Posts: 463
Likes: 8
From: South Florida
2014 E63, Cobra replica, 68 Camaro, 66 Chevy II SS, Z4 BMW, Honda Element, Birel 125cc Shifter Kart.
Exhaust Rattle C63S coupe.
Anyone else got it?
With the exhaust in "open" mode there is a distinct metallic rattle coming from the drivers side under a load that's driving me crazy. Sounds very much like the baffle or flapper in the exhaust is rattling around.
Anyone else having this issue? What did you do about it?
Haven't been to the dealer about it yet but will take it up on the first service.
With the exhaust in "open" mode there is a distinct metallic rattle coming from the drivers side under a load that's driving me crazy. Sounds very much like the baffle or flapper in the exhaust is rattling around.
Anyone else having this issue? What did you do about it?
Haven't been to the dealer about it yet but will take it up on the first service.
Newbie
Joined: Aug 2016
Posts: 9
Likes: 0
From: Houston
08 Lexus 450h / 2012 911s (991) / 2016 TRD Pro 4runner/2017 C63s coupe Edition 1
Yes it is a problem 
my Edition 1 has it and so far still waiting on MB and AMG engineering to send me new part, should be in end of March (( annoying as hell the noise, but confirmed from MBUSA that i can drive it safely for now...
It started back in November and they replaced the Flap once already and lubricated is twice!!!it docent work, Its under warranty and they will fix it that i know for sure....
my Edition 1 has it and so far still waiting on MB and AMG engineering to send me new part, should be in end of March (( annoying as hell the noise, but confirmed from MBUSA that i can drive it safely for now...It started back in November and they replaced the Flap once already and lubricated is twice!!!it docent work, Its under warranty and they will fix it that i know for sure....
Member
Joined: Oct 2016
Posts: 76
Likes: 16
c63 coupe
Anyone else got it?
With the exhaust in "open" mode there is a distinct metallic rattle coming from the drivers side under a load that's driving me crazy. Sounds very much like the baffle or flapper in the exhaust is rattling around.
Anyone else having this issue? What did you do about it?
Haven't been to the dealer about it yet but will take it up on the first service.
With the exhaust in "open" mode there is a distinct metallic rattle coming from the drivers side under a load that's driving me crazy. Sounds very much like the baffle or flapper in the exhaust is rattling around.
Anyone else having this issue? What did you do about it?
Haven't been to the dealer about it yet but will take it up on the first service.
Newbie
Joined: Aug 2016
Posts: 9
Likes: 0
From: Houston
08 Lexus 450h / 2012 911s (991) / 2016 TRD Pro 4runner/2017 C63s coupe Edition 1
Member
Joined: Oct 2015
Posts: 115
Likes: 21
2016 AMG GTS ED1, 2013 C63 P31 Coupe
I don't have a W205 but when I had rattling in my exhausts (probably the valves), I took it to the dealer and it looks like there was a TSB out on it. They stocked the exhausts and swapped out the whole system for me same day.
Junior Member
Joined: Aug 2015
Posts: 35
Likes: 1
C63
Anyone else got it?
With the exhaust in "open" mode there is a distinct metallic rattle coming from the drivers side under a load that's driving me crazy. Sounds very much like the baffle or flapper in the exhaust is rattling around.
Anyone else having this issue? What did you do about it?
Haven't been to the dealer about it yet but will take it up on the first service.
With the exhaust in "open" mode there is a distinct metallic rattle coming from the drivers side under a load that's driving me crazy. Sounds very much like the baffle or flapper in the exhaust is rattling around.
Anyone else having this issue? What did you do about it?
Haven't been to the dealer about it yet but will take it up on the first service.
It seems to occur around 2500-3000rpms under acceleration and sounds like some flapping but not in a good way.
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Senior Member
Joined: Nov 2015
Posts: 431
Likes: 70
From: UK
C63S Coupe/Range Rover Vogue SE
Anyone else got it?
With the exhaust in "open" mode there is a distinct metallic rattle coming from the drivers side under a load that's driving me crazy. Sounds very much like the baffle or flapper in the exhaust is rattling around.
Anyone else having this issue? What did you do about it?
Haven't been to the dealer about it yet but will take it up on the first service.
With the exhaust in "open" mode there is a distinct metallic rattle coming from the drivers side under a load that's driving me crazy. Sounds very much like the baffle or flapper in the exhaust is rattling around.
Anyone else having this issue? What did you do about it?
Haven't been to the dealer about it yet but will take it up on the first service.
Last edited by Trim105; Feb 25, 2017 at 03:05 PM.
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Junior Member
Joined: Aug 2015
Posts: 35
Likes: 1
C63
Yes it is a problem my Edition 1 has it and so far still waiting on MB and AMG engineering to send me new part, should be in end of March (( annoying as hell the noise, but confirmed from MBUSA that i can drive it safely for now...
It started back in November and they replaced the Flap once already and lubricated is twice!!!it docent work, Its under warranty and they will fix it that i know for sure....
my Edition 1 has it and so far still waiting on MB and AMG engineering to send me new part, should be in end of March (( annoying as hell the noise, but confirmed from MBUSA that i can drive it safely for now...It started back in November and they replaced the Flap once already and lubricated is twice!!!it docent work, Its under warranty and they will fix it that i know for sure....
Newbie
Joined: Aug 2016
Posts: 9
Likes: 0
From: Houston
08 Lexus 450h / 2012 911s (991) / 2016 TRD Pro 4runner/2017 C63s coupe Edition 1
Senior Member
Joined: Nov 2015
Posts: 431
Likes: 70
From: UK
C63S Coupe/Range Rover Vogue SE
Junior Member
Joined: May 2017
Posts: 24
Likes: 1
2017 C63S Coupe Edition 1
Anyone else got it?
With the exhaust in "open" mode there is a distinct metallic rattle coming from the drivers side under a load that's driving me crazy. Sounds very much like the baffle or flapper in the exhaust is rattling around.
Anyone else having this issue? What did you do about it?
Haven't been to the dealer about it yet but will take it up on the first service.
With the exhaust in "open" mode there is a distinct metallic rattle coming from the drivers side under a load that's driving me crazy. Sounds very much like the baffle or flapper in the exhaust is rattling around.
Anyone else having this issue? What did you do about it?
Haven't been to the dealer about it yet but will take it up on the first service.
I've been having issues with the dealer replacing my exhuast for this rattle. Now, it seems like at times the flap is totally shut and my car is muted and other times fully open. Anyone have a copy of the TSB or can recommend a dealer in Socal (OC) that can help me?
Member
Joined: Mar 2018
Posts: 124
Likes: 19
From: Berkshire, UK
2019 C63s Coupe
Just to add my C63 has developed this issue lately. It comes in around 3k RPM, sounding like metallic castanets and drives me crazy. I've not raised it with my dealer yet as the car is soon due a service. Hopefully I can hold out until then.
Thread Starter
Senior Member
Joined: Feb 2007
Posts: 463
Likes: 8
From: South Florida
2014 E63, Cobra replica, 68 Camaro, 66 Chevy II SS, Z4 BMW, Honda Element, Birel 125cc Shifter Kart.
Had mine into the dealer twice now for this issue. They did not replace the exhaust system but have ALMOST fixed it. Don’t know exactly what they did but the rattle is almost entirely gone now. Can still faintly hear a little something vibrating with the windows down under hard acceleration but it’s hardly noticeable unless your looking for it.
Member
Joined: Dec 2016
Posts: 115
Likes: 14
2008 BMW M3, 2017 C63s Coupe, 2015 S550, 2018 E63s
Any of you guys find a solution to this problem? Mine is doing the same thing but only started after installing downpipes. Thinking the air is too much for the catless downpipes I have now? Not sure but was wondering what you guys were able to solve.
Did the dealer give you trouble since some of you have downpipes as well?
Did the dealer give you trouble since some of you have downpipes as well?
Senior Member
Joined: Oct 2006
Posts: 258
Likes: 72
From: Orange County
2019 Audi SQ5, 2011 Toyota Tacoma TRD 4wd, 2016 Ford Focus se Hatchback
Anybody have any luck with this or can provide specifics if it was fixed/replaced? I have taken to two dealer and they say its normal or can't replicate. Such MB/Dealer BS.
Thread Starter
Senior Member
Joined: Feb 2007
Posts: 463
Likes: 8
From: South Florida
2014 E63, Cobra replica, 68 Camaro, 66 Chevy II SS, Z4 BMW, Honda Element, Birel 125cc Shifter Kart.
My rattle came back worse than ever and has been back to the dealer four times for this without success. They say they either can’t duplicate the rattle or can’t find anything wrong. So, at this point I think I’m going to have to insist that they replace the exhaust. I have a good relationship with my SA and the dealer so hopefully they’ll do something.
MBWorld Fanatic!
Joined: Jan 2017
Posts: 1,117
Likes: 182
Mercedes-Benz E63s AMG
Just took my car to the dealership and drove with the mechanic to show him the issue. He immediately knew what it was and said it was a common problem on the GTS's... Sounded confident he could fix it since he knew exactly what the problem was. Will keep you guys updated. My rattle is best heard in Comfort Mode, PE ACTIVATED, 3rd gear, 2.5k RPM, foot down 50-75%... it only lasts through about 3-3.5k, so you have to let mechanic know exactly when to listen.
MBWorld Fanatic!
Joined: Jul 2011
Posts: 1,146
Likes: 206
2019 AMG GT R
This is annoying af.. no one knows what the issue is. My dealer gave up and said its because of the secondary cat delete. Im at eurocharged now and I believe even they are about to put their hands up and say they have no idea what is causing it!
MBWorld Fanatic!
Joined: Jul 2011
Posts: 1,146
Likes: 206
2019 AMG GT R
UPDATE: Looks like we have found the source of this hissing/rattle sound for my car at least. Went to Eurocharged and there wasnt anything wrong with the secondary cat delete. The exhaust valves are the culprit since the noise goes away as soon as I close the valves. I clearly never drive with the valves closed so never discovered this but called the dealership who refused to take a look at it blaming the cat delete and they will send me on a road test with their head technician so Im hoping now that they will take care of the issue.
MBWorld Fanatic!
Joined: Jan 2017
Posts: 1,117
Likes: 182
Mercedes-Benz E63s AMG
Yeah, that's what my MB mechanic told me it was this morning... glad you confirmed it. I did tell him it only happens with the exhaust valves open. Good thing I am getting this taken care of before my DP's =D
