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Loud rattle at ~1250 rpm 2013 w204 c250

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Old 06-10-2023, 10:35 PM
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2021 GLB250 FWD, 2023 GLA250 FWD
Originally Posted by mtaani
thank you for your reply we are trying to find a solution to fix our cars so many people has the same issue with their cars of course i will not pay the $9000 I just mentioned how Mercedes dealership did know how to fix the issue .
And i have mentioned what part they replaced trying to fix it but with no luck

if i wanna trade it in or sell i will not waste my time looking for a solution
Unfortunately, that’s a tactic of some dealerships to get you to buy a new car — quote an absurd repair cost to lead you to the conclusion you have already made. But if the dealer is your only repair option, it might be the right one. I would suggest trying an independent German car shop familiar with Mercedes. Considering everything that has already been replaced, the symptoms don’t lead me to an immediate suggestion.
Old 06-11-2023, 03:05 AM
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W204 2013 C250 Coupe
Originally Posted by mtaani
please let me know what did you found about that noise my car car the same problem i took it to Mercedes dealership few times the last time they took 3 months looking for that issue and this is what they did trying to fix it
replaced vacuum pump
replaced camshaft
replaced oil pressure pump
checked the lifters

and after all that didn’t fix the issue, they need to take the engine out and check it from the bottom and that will cost me $9000 just labor no parts

i have 2015 slk250 1.8 turbo the same engine for c250 it had 25k mileage when the issue started now it had 44k


please if anyone knows what should i do ? I spend so mush money on and nothing fixed the noise getting louder no check engine light .
I understand your frustration, the rattling noise is terrible. haven't found any solutions unfortunately, a mechanic said that the noise was coming from the exhaust manifold gasket thou I didn't follow up on that since its only a rattle so far. I figured better to spend the money on more pressing repairs as a lot can go wrong with these cars.
Old 12-19-2023, 05:01 PM
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Do Anybody know? is it the exhaust manifold?
Old 12-20-2023, 09:17 AM
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2015 SL400 (M276 Turbo), 2014 C350 Sport (M276 NA), 2004 SL500 (M113), 2004 Audi TT225 (BEA)
Skimmed this discussion and have two questions. The first is, any codes? The second is were any heat shields checked?

Bonus observation: if the problem persisted 30k or more miles, it’s probably more annoying than destructive.
Old 12-20-2023, 10:19 AM
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From what i read in other forums. They all say its the camshaft adjuster. It can create start up issues and has to be replaced While not an immediate safety concern, the camshaft adjuster failure could lead to engine failure anytime

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