Siren Noise potentially turbo. Advice needed

[Steveshipsides]

Hello everyone. I have been searching the forum looking for specific help and guidance on an issue with my T180 Avensis.

I am new to car forums so I hope someone can help and I hope I am following all the correct rules and posting in the right place. 

 

I recently bought my father in-laws avensis from him. Before I bought it my father in law told me that the turbo was making a siren noise (whine sound) when driving but it didn't effect the reliability or performance, the sound seems to lessen once warmed up.

 

Through my hours of searching I found a YouTube video which gives a perfect recording of the noise.

 

My avensis is always serviced and is a 2007 t180. It's on 80k.

To clarify the performance appears unaffected it's just annoying and sounds like a police siren whining 

I see on the comments of the YouTube vid show it's the turbo. But I'm after advice on the following

Have any of you experienced this before and is there a known fix

Do any of you know if it's likely to cause damage of it goes unrepaired.

What's the estimated cost of a replacement turbo.

Thank you all for reading it and advising me.

Stephen

[fordulike]

Ok, so not the same car, but that's exactly how my Nissan Almera 2.2 DCi used  to sound, and that was from brand new. I put it down to the design of the VVT turbo, which uses vanes, instead of a dump valve, to control the turbo speed.

Went on to do 100k miles, before I sold it in great condition. Turbo never gave me any problems throughout ownership. Did need a regular clean of the EGR valve to keep it running sweet though!

[revband]

My 2011 2.2 also had a similar sound from new and it was just the same when I sold it six years later. Don't worry about it.