CLS 350 CDI C218 ticking/tapping noise

[Oz642]

Hi Guys,

I am Oz from Poland. I purchased CLS 218 350 CDI 2011 year. It is almost 4 months. Since i purchased the car there is ticking / tapping noise. There is no error codes when connecting the computer. Sound is annoying. When the engine is hot the noise is more strong. From below link you can watch it.
Do you think what is could be ?

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Thanks in advance !