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what is this noise?(with video/audio)

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Old 02-09-2017, 10:23 AM
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Unhappy what is this noise?(with video/audio)
I just heard a new hiss noise coming from the front right direction(it is a right side steering wheel car). Please see this yxutxbe video. apart from the engine noise, there is also a higher pitch hiss sound. Already visited the dealer but nothing wrong was found

Could anyone please give me some help? Thank you very much.

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Old 02-09-2017, 11:15 AM
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C 250 (W205)
I have the same noise.
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Old 02-09-2017, 09:42 PM
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Thanks for the reply. Are you hearing that from day 1 you drive it? I only hear this hiss recently.(it's a 2015 made c200)
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Old 02-10-2017, 07:49 AM
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C 250 (W205)
I only drove 2500 KMs but started hearing it maybe after 1500 KMs. Anyway I started recognizing many things after 1500 KMs so perhaps it was there from the beginning.
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Old 02-27-2017, 01:22 PM
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2022 E53 AMG
maybe the turbo?
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