Mr. John Smith

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Sep 8, 2016 | 02:27 AM

#21

mosesbotbol

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Joined: May 2008

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From: Boston, USA

Quote:

Originally Posted by shemp

Is this true? Is it in "convenience mode" when unlocked and the door shut? I do notice when I turn the car off and sit in the driver's seat for a minute, there is a slight "humming" from under the driver's side dash (like a fan motor sound).

That's the aspirator motor. It's noisy by default.

Sep 8, 2016 | 09:10 AM

#22

shemp

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Joined: Aug 2016

Posts: 1,496

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From: Plano, TX

Quote:

Originally Posted by mosesbotbol

That's the aspirator motor. It's noisy by default.

Ahh yes. My Yukon has one that in the headliner, similar hum. It's not loud, I was just curious. No sure why it needs to sample cabin air when the engine is off though.....