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Valve issues C63S 2015

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Old Jan 27, 2020 | 06:37 AM
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Valve issues C63S 2015

I have a 2015 wagon and not sure if it is an issue or just standard but i cant open the valve in comfort mode. Is it supposed to be like that?
And when I'm in sport+ and the valves are open, they close when I'm at a red light. As soon as i release the brake it opens. When stationery I can play with the valves pressing and releasing the brakes

Had a non dealer mechanic look at it and with the computer he could open and close (you could clearly hear the difference) so the valves work but not the way I'd like or thought it works. Maybe its the standard for the first yearmodel
Would love some insight on the matter
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Old Jan 27, 2020 | 08:57 AM
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Originally Posted by Amme
I have a 2015 wagon and not sure if it is an issue or just standard but i cant open the valve in comfort mode. Is it supposed to be like that?
And when I'm in sport+ and the valves are open, they close when I'm at a red light. As soon as i release the brake it opens. When stationery I can play with the valves pressing and releasing the brakes

Had a non dealer mechanic look at it and with the computer he could open and close (you could clearly hear the difference) so the valves work but not the way I'd like or thought it works. Maybe its the standard for the first yearmodel
Would love some insight on the matter
You've got the AMG Performance Exhaust, don't you? With the exhaust button on the console, yes?

If you do, then there's an issue here. Pressing the exhaust button on your console will open the two rear muffler valves regardless of which mode it's in. I always drive in Comfort mode with the valves open.

Does the exhaust button on your console illuminate red when you press it (like in the picture below)?



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Old Jan 27, 2020 | 09:11 AM
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Originally Posted by Jimmy_c63s
You've got the AMG Performance Exhaust, don't you? With the exhaust button on the console, yes?

If you do, then there's an issue here. Pressing the exhaust button on your console will open the two rear muffler valves regardless of which mode it's in. I always drive in Comfort mode with the valves open.

Does the exhaust button on your console illuminate red when you press it (like in the picture below)?
Yes I have both performance exhaust and drivers package
The button illuminate when I change modes, but in comfort it dos not illuminate when I press it
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Old Jan 27, 2020 | 11:03 AM
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Originally Posted by Amme
Yes I have both performance exhaust and drivers package
The button illuminate when I change modes, but in comfort it dos not illuminate when I press it
That definitely does not sound right. In all 205 C63s (sedan and coupe) I've been in I've always been able to open the exhaust flaps in Comfort mode.

Has yours always done this? How long have you had the car for?
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Old Jan 27, 2020 | 11:15 AM
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Originally Posted by Amme
Yes I have both performance exhaust and drivers package
The button illuminate when I change modes, but in comfort it dos not illuminate when I press it
Shouldn't be like that.

I can put mine in LOUD in COMFORT mode even with ECO on. Did this suddenly just happen? Or always been like this?



Regards
George Lisciandro
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Old Jan 27, 2020 | 11:26 AM
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I have recently bought the car so I don’t now if it has always been like this. The place were I bought from checked with computer and on/off worked
but in drive the valves won’t open in comfort
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Old Jan 27, 2020 | 11:28 AM
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Originally Posted by Amme
I have recently bought the car so I don’t now if it has always been like this. The place were I bought from checked with computer and on/off worked
but in drive the valves won’t open in comfort
Get them to fix it mate. Strange issue!
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Old Jan 27, 2020 | 01:17 PM
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Originally Posted by Jimmy_c63s
Get them to fix it mate. Strange issue!
I’d like to give a go at troubleshooting myself first. I like the learning process
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Old Jan 27, 2020 | 09:44 PM
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Originally Posted by Amme
I’d like to give a go at troubleshooting myself first. I like the learning process
Can you give us an update on your findings mate? Just in case others come across this issue? It's definitely the first time i've heard of this!
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Old Jan 28, 2020 | 02:02 AM
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Originally Posted by Jimmy_c63s
Can you give us an update on your findings mate? Just in case others come across this issue? It's definitely the first time i've heard of this!
yea sure!
but I turned to this forum first so
I was thinking a way to test it. Can I in individual set everything in comfort expect the valves? I mean just to test it?
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