C63S - Strange Engine Noise!!!!!
Weird one... My engine has started making what I'll call a chirping noise.
It's NOT rhythmic insofar as there's any set pattern to it that would lead me to believe it's belts, or valves as they cycle.
It's random in nature.
Every few seconds, 1-4 chirps and then a 5-10 second normal sound, then it starts again.
Has anyone else noticed this?
I brought it to my dealers attention and haven't received a response yet.
It's almost the sound of an oil starved engine, but it only happens at idle!!!!
Weird one... My engine has started making what I'll call a chirping noise.
It's NOT rhythmic insofar as there's any set pattern to it that would lead me to believe it's belts, or valves as they cycle.
It's random in nature.
Every few seconds, 1-4 chirps and then a 5-10 second normal sound, then it starts again.
Has anyone else noticed this?
I brought it to my dealers attention and haven't received a response yet.
It's almost the sound of an oil starved engine, but it only happens at idle!!!!
https://mbworld.org/forums/c43-amg-c...nd-engine.html
does it sound same?
We are aware about number of AMG vehicles with this sound. We assume, it is going from valve gear (chains?) Custumer need to know, that this annoying noise doesnt harm engine, nor performance of the car. As the car is fully usable, your service stuff can reassamble car and it can be given to customer. At this time we have no solutions for it, but we will inform you as soon as we find it.
What a ****IN BULL$h1t!!!!
What a stance.... im sure in US, they would have very hard times with such an answer
My car is there for more then 3 weeeks. At this time im in negotiation process with dealer about swaping the car. We ll see how it developes.
We are aware about number of AMG vehicles with this sound. We assume, it is going from valve gear (chains?) Custumer need to know, that this annoying noise doesnt harm engine, nor performance of the car. As the car is fully usable, your service stuff can reassamble car and it can be given to customer. At this time we have no solutions for it, but we will inform you as soon as we find it.
What a ****IN BULL$h1t!!!!
What a stance.... im sure in US, they would have very hard times with such an answer
My car is there for more then 3 weeeks. At this time im in negotiation process with dealer about swaping the car. We ll see how it developes.
My dealer also said normal...
Im visiting dealer on monday, they allready agreed about swap. Final conditions we will discuss further.

Man im about to jump ship, had to chnage brakes at 12k now this?
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brakes are extremely easy to do on this car.
I just came across this forum and had to create an account for this EXACT same reason! My car has been doing the same things as well

I bought my C63s used (~6k miles), and drove it for a while before noticing the sound.
Here is a link:
I also struggled to get my dealership to admit this wasn't a "normal" engine noise, but after taking it back several times they agreed to work on the car.
So far, they have replaced the idler pulleys and belt tensioners with no luck, and they were going to give up, but that day the MB rep that deals with claims happened to be there and as soon as he sat in the car, an error code popped up on the screen. Now they are replacing the camshaft adjusters. My car has been in the shop for 3 weeks!!
I searched "camshaft adjusters C63" and found this class action for the W204 models:
http://topclassactions.com/lawsuit-s...tion-lawsuit-/
Although I'm not sure what ever happened/if the issue could affect newer models...was also discussed on this forum somewhere, I can find the link if you are interested.
Have either of you had any luck? Did they already buy back your car? I will let you guys know if I hear anything back on my car, supposedly will hear something next Thursday.
Last edited by fuzzy_wuzzy_was; Mar 17, 2017 at 07:22 PM.
My dealer had several belts replaced, tensioner, some sealing with no succes, so I gave up. I bought semi-exclusive car with one man-hand made engine, not a Lego with hit/miss repair training. There has been more issues with my car, so I refused to pick up my car, negotiated swap and ordered something complete different. (Facelifted S class LOL) . I hope, there will be time for AMG sometimes in future though..
I just came across this forum and had to create an account for this EXACT same reason! My car has been doing the same things as well

I bought my C63s used (~6k miles), and drove it for a while before noticing the sound.
Here is a link: https://youtu.be/503oFMmot2s
I also struggled to get my dealership to admit this wasn't a "normal" engine noise, but after taking it back several times they agreed to work on the car.
So far, they have replaced the idler pulleys and belt tensioners with no luck, and they were going to give up, but that day the MB rep that deals with claims happened to be there and as soon as he sat in the car, an error code popped up on the screen. Now they are replacing the camshaft adjusters. My car has been in the shop for 3 weeks!!
I searched "camshaft adjusters C63" and found this class action for the W204 models:
http://topclassactions.com/lawsuit-s...tion-lawsuit-/
Although I'm not sure what ever happened/if the issue could affect newer models...was also discussed on this forum somewhere, I can find the link if you are interested.
Have either of you had any luck? Did they already buy back your car? I will let you guys know if I hear anything back on my car, supposedly will hear something next Thursday.
This is just Crank Vent system during idle making that noise, there is another dude found ticking noise at the exhaust, same stuff.
When fully warmed in gear, the sound goes away.
BTW I would like to say, I had 80% confidence it is EVAP purge valve.
Last edited by srO_Michael_Orz; Dec 9, 2018 at 11:20 PM.
BTW I would like to say, I had 80% confidence it is EVAP purge valve.
DEC 9th: Tested both left and right side EVAP purge valve solenoid while engine off in this cold morning. Found left EVAP purge valve solenoid made significant more noise than right side, and pretty much the same noise as sounds during cold idle. Start engine when RPM drop to idle, noise only maintained about 30 second. Its not enough time for me to unplug EVAP purge valve solenoid wiring to testify.
due to this problem on my car is intermittent and very short time on cold condition(usually come with the first cold start), I need more time and more vehicle to test it.
If someone near Montreal or Toronto and had this issue, PM me, I will come to you and test confirm the problem on your car.
Last edited by srO_Michael_Orz; Dec 9, 2018 at 11:22 PM.



