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Old 08-17-2020, 02:12 PM   #4 (permalink)
chubbs
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Join Date: Jan 2009
Location: Zeeland
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Drives: 2016 370z Auto-Grey
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I know this thread is 8 years old, but I've developed exactly the same problem with my 2016 car.

When the air conditioning is on 'recirculate' I get a loud knocking noise coming from inside the centre of the dashboard. It seems to be a fan hitting something.

When I turn 'recirculate' off, the noise stops.

Could a fan be hitting some kind of flap? Did anyone find out what causes this knocking noise?
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