amaksoud78

Hello all,

I have a 2022 E200 petrol with EQ boost ( I believe M264 but not sure), when cold starting the car, I feel a minor vibration from the engine side that lasts for a second or tow only then disappears.

I have read some articles on this issue from on a local car blog owned by someone who has a service center but frankly speaking, I'm not correlating what he mentioned specially that he writes his articles without much of technical details.

What I understand from that article is that this has been a known issue for many M260/264 engines, and it was solved by a SW update in some cases, changing a pump that he didn't even mention which pump and in other cases or sometimes swapping the engine!!!

Any ideas on what the issue is? and whether that blogger's article is actually true?

iva80

I have a 2021 W213 E200 EQ boost and I encounter vibrations, but I feel them in the seat.
My symptoms:
- cold start
- engine revs at cca 1200 rpm
- stays there for about 15-20 seconds
- I feel the vibrations when it starts dropping to 800-900 rpm

A few months ago it was more noticeable. Maybe I just paid more attention when I got the car.

GreyE213

It’s most likely ur motor mounts

aks_19_ak

This happened to my E300 (build date March 2020) only once last July (Aussie winter).

Ambient temperature was 5’C at around 12 am, and the car was parked on the street for the preceding 4 hours.

Upon starting, the engine and car rattled and vibrated at a noticeably quick frequency for 15 seconds or so with a loud chattering sound. I switched it off, then started it up again and the car started normally with a purring engine.

I’ve been wary since. Curious to know what this has to do with the engine mounts, as they seem to be dampening all other times.

GreyE213

From the sound u explaining could be timing chain tensioner do u hear like chain rattling type sound for 15 seconds or so then goes away