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Sound beneath rear of vehicle

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Old 09-29-12, 05:48 PM   #1
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Question Sound beneath rear of vehicle

I tried a search and didn't find anything about this. My car had been parked in our garage for several hours. I entered the garage and I heard something like a soft humming/whirring sound coming from beneath the rear of the car. After about thirty seconds, it stopped. I'm not concerned, since I suspect something is happening by design. However, I am curious as to what it might be. Any thoughts?

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Old 09-30-12, 10:06 PM   #2
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Normal.

It's a purge of the EVAP system. I think it starts somewhere around 4 hours after the car has been shut down. I don't know about some other cars, but I think most Toyota products do the same thing.
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Old 10-01-12, 07:11 AM   #3
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Thanks for the feedback, Dave. Makes me wonder what else is quietly going on behind the scenes!
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Old 10-09-12, 10:51 AM   #4
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My HS used to make different sounds from the rear, like it was maintaining itself. I have traded it in on a 2013 ES300h that I had to special order to get all the options I want. I had the Tech package on my HS and wanted all the safety items it had on the new ES. Now I wait, they told me 3 to 4 months.
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Old 10-17-12, 05:22 PM   #5
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Default Jolly better do some DD

You can not get - the heads up display - plus many more on the car.
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