I have a whining noise coming from my electric aux water pump.
I removed the HVAC panel and cleaned the air sampling fan,
It's whistle clean now. It's not the sampler fan

No question, it's the aux pump, I can listen to it then cycle cabin fan off and on.
It's a whiny pump.
No leakage, just noise. Anyone else hear this on the mighty X5?

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2003 4.6is X5
2003 525it
2003 E53 X5 Standard shift