C220 CDI 2011 - W204 - Loud Engine Rattle Noise on Start Up

Loud rattle from engine.
Is this the chain rattle noise?

[ccmobish]

Might be the crankshaft and camshaft sensor. If you hard reset the check engine light. Then you'll notice the chain doesn't rattle. so, it's a faulty communication with the engine. Codes for that will be P0018.

[Comycboy]

If you replace the chain tensioner it would resolve the issue as well.
This cars are old..the original tensioner are like 7 years old.

[julian]

Bro I´m late but my C180 CGI W204 sounds exactly the same. Every time I start it up, it sounds like this. If the motor is cold its worse than when it is warm. My chain was changed 40tkm ago so idk what it could be. Did u find a solution?

[rodinas]

Yh this a timing chain go to a Mercedes Benz garage or a specialist as they use genuine parts believe me you need genuine as the third part will become loose and CHANGE IS AS SOON AS YOU CAN IF THAT SNAPS YOUR ENGINE IS GONE

[cucumber_]

Hello, do you remember what tensioner needed to be replaced?

[thomasbrassco]

I just changed chain, camshaft adjuster, oil, filter. Still makes the noise. Any idea? Garage told me its the oil pump tensioner. What do you guys think?

[garethoswald]

Ok might be time for timing chain or at least hydraulic tensioner change. But in some cases. Especially well maintained cars. I think something else is the route cause that sets fail scenario in motion. Oil filter housing overnight drain back to sump. And yes i know about oil filter o rings. But. In some cases oil filter is draining back to sump overnite causing oil feed delay. Due to pump having to fill filter first. Try this. Remove your oil filter in morning before starting. If your filter is bone dry. Its draining back. Yes i know filter housing drains when you remove filter and stem. But a filter seconds before immersed in oil would be dripping wet. If your filter is bone dry and seems like its been drained hours earlier. You got run back.

[kalikoura]

Did you solve this? Ive got the same issue and just had my timing chain done ;(

[wilfredomacabuhay]

tensioner is the problem...some tensioner requires oil pressure to create chain tension

[Jorge.Torrez]

Hey so mine was making that same nose and drove till I heard something brake and it died the next day I went to check on it I looked at the bottom and there was a lot of oil leaking ? What y’all think it could of been ?

[mateialexandru]

had same noise is the high pressure fuel pump. the engine not getting enough fuel

[alexloef]

Hi, got the same issue, worden when really cold outside. Did you find out what it is?

[samwhu]

Had this noise for a couple months on my 2015 e220d, foolishly i did nothing about it and now its been in the garage for a week having an engine rebuild and new fuel injectors...£5k the cost...please learn from my mistake and DO NOT IGNORE THIS 🙈

[timbask]

Does this sound like the timing chain?

[Kamzb]

Hi, anyone find out what the issue is?

[davidbeig]

I've got the exact same problem someone told me could be my flywheel did you solve the issue?

[jonnyonetime]

had my timing chain done and still hear this im thinking serpentine belt but im guessing tbf

[karan]

I got this same noise started recently don’t know what exactly it is, can anyone help me