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High Pitched sounds from drive unit 35-50 MPH

I love my car. I bought it a few months ago used. And am very happy with it so far.

However I have had a high pitched noise coming from drive units while driving 30ish to 50ish mph. It cycles up and gets a bit louder when regen. I know the car makes some noise. But I do not hear it in other models i've test driven, rented, or had as a loaner. My 2018 75D (26k miles) seems to have an issue that others do not have. I did take it in for service and the tech heard nothing, but he also didnt hear the clunking sounds from my half shafts. I was charged a diag fee for my complaint.

Anyone know if this is a common issue? I've seen other posts that are similar in nature, mostly from model 3's.
Mine was doing exactly that last fall/winter and they replaced the drive unit.
How did you get them to discover it?
I have heard a high pitch noise in my 2017 Model S before but its hard to pinpoint it. It comes and goes. Sometimes for weeks I don't hear it. But you're right, it is usually within 25-40 mph.
man! I wish mine would go away. Sucks driving at city street speeds

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