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Why is my BMW 3 Series making a squealing noise when I accelerate?

I recently bought a used BMW 3 Series and have noticed that it makes a high-pitched squealing noise when I accelerate. What could be the cause of this and how can I fix it?

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J

It sounds like your serpentine belt may need to be replaced. This belt is responsible for powering various components in your engine, and if it becomes worn or cracked, it can cause a high-pitched noise.

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