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post #1 of 6 (permalink) Old 04-24-2014, 07:50 AM Thread Starter
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Default hybrid battery runs while car turned off

Has anyone experienced this on their Prius?
I have an 8 month old 2013 Prius.
On 2 occasions when I went in my garage at home I heard the car humming from the center/rear (not under the hood). MY CAR WAS TURNED OFF. It is the same noise I hear when I open my car door, like the hybrid battery is warming up. I started my car, and then turned it off. The hum stopped. The 1st time this happened, it must have been running a long time, because when I started my car, the hybrid battery "dummy light" on my dashboard was down to 2 bars. This never happened on my 2010 Prius and I wondering if my car has a repair problem or is this battery "discharge" normal? My dealer / mechanic acted like they did not understand my concern.
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post #2 of 6 (permalink) Old 04-24-2014, 11:00 AM
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It's normal.
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post #3 of 6 (permalink) Old 04-24-2014, 11:31 AM Thread Starter
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Really? This is normal behavior, to have the car hum while it is turned off? Why is it doing that ? What is happening
?
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post #4 of 6 (permalink) Old 04-24-2014, 04:32 PM
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It has to do with the vapor extraction system (gas tank). It will run about 30 or so minutes after shutting the car down. Hybrids make all kinds of different sounds.
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post #5 of 6 (permalink) Old 04-29-2014, 01:35 PM Thread Starter
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Default Hybrid battery runs while car is shut off

I am talking 6 hours later. And it doesn't run immediately upon shutting off the motor. Many hours later I find it parked in my garage with the battery humming. To the point that the battery was drained.
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post #6 of 6 (permalink) Old 04-29-2014, 03:29 PM
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Quote:
Originally Posted by myers14526 View Post
I am talking 6 hours later. And it doesn't run immediately upon shutting off the motor. Many hours later I find it parked in my garage with the battery humming. To the point that the battery was drained.
What battery was drained, the 12v?

The battery does not make any noise.

Have the dealer keep the car for awhile to find out what is making the noise.
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