W212 E350 2010 chirping noise when accelerating.

[ziefik]

Hi guys. I've picked this car up recently and I'm worried something might be up with it. There's this strange chirping noise when accelerating, seems to get worse the harder the acceleration. I've tried to capture it on video, hopefully it comes through well enough to hear it. Was wondering if anyone has had an issue like this and what the solution was. I'm planning on taking it to a MB specialist but obviously would be great to have some idea of what could be wrong. Any input appreciated, thank you!

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[TeddyRuxpin]

It's really hard to make out. Could be anything from brake binding to something up with the turbo

Does it do it if you rev it in neutral?

 

[ziefik]

It's really hard to make out. Could be anything from brake binding to something up with the turbo

Does it do it if you rev it in neutral?

Only when accelerating, seems to be just fine in neutral.

-edit-
Last owner had new turbo put in in 2020, could it be a faulty unit perhaps? There's no issues with lack of power or anything.