When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
The latest in this mystery;
MB Germany requested the dealer perform the following which they did, still waiting for prognosis;Mercedes-Benz technical assistance performed:
Intelligent repair procedure test for transmission
Downloaded EEPROM data from transmission and send to tech division of MB
Check for current software updates for transmission – none found
Luckily after 4 visits, the car finally displayed the 'rumbling/shuddering' noise I had been trying to get happen for the dealer. Will now await further info from MB
Well after another two diag visits, the dealer and Germany are STILL working on this issue. here's the latest and if any of you know what the heck this all means, please enlighten us.
"1st was a dynamic driving test that I got information on what was being used when vibration was on it turned out to be only when it had a small valve lift on camtronic was not 100% confirmed it was the issue since tips didn’t confirm second visit was to collect information tips request (injector performance data and engine log data) still waiting on a response from DAG which is Germany technical department "
4th visit:
Performed as scan of engine can bus for data sent to MB in T.O. technical assistance department for Germany to diagnose.
Now the dealer wants the car again so Germany can directly do the diagnostics that the dealer tried to do.
Well after 6th visit to the dealer and where MB techs in head office connected to the car, they have come to the conclusion that the engine and trans mounts be replaced. I still questioned as to why the rumbling while in ECO mode and no rumbling when I shut ECO off. They claim that the ECO causes only 4 cylinders to kick in at slow speeds and that cause the rumbling. In light of that theory, why would an S Class have ANY RUMBLING AT ANY STAGE???!
My question to my fellow forum members is, what do you all know about this '4cylinder mode' and do any of you have the same rumbling symptom til you pick up speed?
Thank you for your thoughts, i desperately need them cause I'm not quite satisfied with this theory of theirs.
Well after 6th visit to the dealer and where MB techs in head office connected to the car, they have come to the conclusion that the engine and trans mounts be replaced. I still questioned as to why the rumbling while in ECO mode and no rumbling when I shut ECO off. They claim that the ECO causes only 4 cylinders to kick in at slow speeds and that cause the rumbling. In light of that theory, why would an S Class have ANY RUMBLING AT ANY STAGE???!
My question to my fellow forum members is, what do you all know about this '4cylinder mode' and do any of you have the same rumbling symptom til you pick up speed?
Thank you for your thoughts, i desperately need them cause I'm not quite satisfied with this theory of theirs.
I bet that one of the four cylinders isn’t functioning to spec. Could it be a bad coil? Fuel injector? Or Plug? Or even worse a bad piston/rod?
Just picked up my car from the dealer after engine and trans mounts were replaced. I must admit that the symptoms of 'rumbling' effect have been greatly reduced mind you, If you all remember, this rumbling was very apparent in ECO mode and almost disappeared when ECO was shut off. I have only driven it about 7 miles from dealer to home. Will keep you all informed.
Sorry to hear that you are still facing this issue. Thanks for reminding me about this thread. I am checking the messages now just in case they did talk about it and I forgot to update you. If not, I will ask again and wait for a new reply.
PFL205.064 with M276.823 (Oil pump solenoid defeated)
Sorry, I couldn't find the reply. I sent the message again and along with the symptoms they should expect and how to replicate it. Hopefully I get a reply soon, please remind me to update you if you don't hear from me in a few days.
Today, according to the 'official' word from MB Canada's tech dept., it would appear that most of you S class drivers have either come to accept the mild rumbling in your drive train OR you're just to oblivious to the effect altogether. I can't believe that you all are driving a vehicle with this condition and do not notice it.
The tech folks say it's a result of the type of engine they use in the W222 and the ECO mode puts the car in a 4 cylinder stage, thus the slight rumble sensation. Really? Is that what you all have come to accept or just do not even notice?!!!!!
I can't believe that.
What say you all? In all my 'lesser MB vehicles which you can see at the side, I have never experienced this effect.
Today, according to the 'official' word from MB Canada's tech dept., it would appear that most of you S class drivers have either come to accept the mild rumbling in your drive train OR you're just to oblivious to the effect altogether. I can't believe that you all are driving a vehicle with this condition and do not notice it.
The tech folks say it's a result of the type of engine they use in the W222 and the ECO mode puts the car in a 4 cylinder stage, thus the slight rumble sensation. Really? Is that what you all have come to accept or just do not even notice?!!!!!
I can't believe that.
What say you all? In all my 'lesser MB vehicles which you can see at the side, I have never experienced this effect.
The M278 in the S550 does not have cylinder deactivation. Does the S560 have it?
If I had a vibration in mine, believe me I would feel it. Its the #1 or #2 smoothest most refined engine I have ever had, the one that may best it or be a close second was the 1UZ-FE in my LS400/3UZ-FE in my LS430 (same engine really). But the engine in mine is WAY smoother than the 1UR-FSE V8s that were in my LS460s.
PFL205.064 with M276.823 (Oil pump solenoid defeated)
Originally Posted by W205C43PFL
Sorry, I couldn't find the reply. I sent the message again and along with the symptoms they should expect and how to replicate it. Hopefully I get a reply soon, please remind me to update you if you don't hear from me in a few days.
So only one person got back to me, he was able to replicate the issue and told me to thank the forum member (in this case, thank you OP) for bringing it up and will likely schedule an appointment to have it checked. Well, I guess this answer doesn't exactly help you OP but you helped him so there is that. I am still waiting for others to get back to me.
It perhaps is not a common issue though as I don't hear about this often, once he gets his vehicle checked I will update you on the status. On the other hand, once others reply to me I will also update you here.
Well I guess that I'm pretty well done with this issue. MB Canada has said that this is all "normal" for that engine which is used in 2018-2020 S 560 models. It is in fact a result of the car going into the 4 cylinder mode when in ECO mode. I then called a Technician at another dealership where I had purchased 3 vehicles from in the past. He was well aware of this scenario and agreed that it is characteristic of this engine. The only option is to shut off the ECO. Perhaps some of you folks who think you have a quiet car, may want to shut off the ECO switch while driving and let us know if you notice a smoother and QUIETER drive train. Could it be some have a hearing issue, lol?
In spite of all the crap I've been thru it is still hard to beat the S Class....but being the constant car buyer every 2 years, I will try other vehicles just to keep up with the times. BTW, the dealer here had an EQS charging up in the showroom. Hmmm, still struggling with the 'rounded' body and stubbed rear end. Maybe I'll hold out for a clean used W223 next year.
In closing, I want to thank all the members who have aided me in trying to sooth my frustrations with this issue.
Well I guess that I'm pretty well done with this issue. MB Canada has said that this is all "normal" for that engine which is used in 2018-2020 S 560 models. It is in fact a result of the car going into the 4 cylinder mode when in ECO mode. I then called a Technician at another dealership where I had purchased 3 vehicles from in the past. He was well aware of this scenario and agreed that it is characteristic of this engine. The only option is to shut off the ECO. Perhaps some of you folks who think you have a quiet car, may want to shut off the ECO switch while driving and let us know if you notice a smoother and QUIETER drive train. Could it be some have a hearing issue, lol?
In spite of all the crap I've been thru it is still hard to beat the S Class....but being the constant car buyer every 2 years, I will try other vehicles just to keep up with the times. BTW, the dealer here had an EQS charging up in the showroom. Hmmm, still struggling with the 'rounded' body and stubbed rear end. Maybe I'll hold out for a clean used W223 next year.
In closing, I want to thank all the members who have aided me in trying to sooth my frustrations with this issue.
By "eco" mode do you mean the engine start/stop? Mine is disabled, and if that solves the issue thats an easy fix to your issue.
No Steve, the Eco button is down next to the touchpad, the lit 'A' with the green light on the panel as pictured. Let us know if you see the difference when you try it.
No Steve, the Eco button is down next to the touchpad, the lit 'A' with the green light on the panel as pictured. Let us know if you see the difference when you try it.
I think that's what he means by engine start stop. There is a module you can buy that stops it from coming on automatically. I'm thinking about getting it myself.
09-30-2021, 05:20 PM
