Humming noise from dash when the A/C is on

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Humming noise from dash when the A/C is on

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11-16-2011, 02:35 AM

X5only

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Join Date: Feb 2008

Location: Bellevue, WA

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Humming noise from dash when the A/C is on

A soft, persistent humming when the A/C is on. Turn off the A/C (toggle the A/C button off), no hum. Turn the A/C back on: humming noise....Seems to be coming from somewhere behind the dash.

I don't think it would be the blower motor since leaving blower on with A/C off does not make the noise. Anyone here fixed this A/C issue? Could it be the compressor? I'd replaced the belts and pulleys but noise still there.

2005 X5 4.4 sports

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'05 E53 X5 4.4i, '97 E39 528, '07 E92 335i, '16 F86 X6M.

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