noise when parked and no key in ignition

[sammy]

I own a 2016 Subaru outback with automatic transmission.
I have noticed a few times already a noise coming from underneath the car like something is running. Car is parked, cold, and no key in ignition.

 

[Nate4x4]

I own a 2016 Subaru outback with automatic transmission.
I have noticed a few times already a noise coming from underneath the car like something is running. Car is parked, cold, and no key in ignition.

Welcome.
Did you open the hood and look for clues as to where the sound might have come from?

 

[Nate4x4]

If the car is totally off and you're still hearing it, then it likely has to do with something other than the car itself.

When did you start noticing this?

 

[Codgotter]

Could be a mouse?

 

[sammy]

It seems to be coming from the underneath the car in the back, not a mouse, it is like a small engine is humming. I have owned the car for only a few months, and heard it twice. Car is totally off.

 

[Nate4x4]

It seems to be coming from the underneath the car in the back, not a mouse, it is like a small engine is humming. I have owned the car for only a few months, and heard it twice. Car is totally off.

Take a look at this clip.
https://youtu.be/6WEAMiUEdYM

 

[Nate4x4]

Sound anywhere familiar?

 

[sammy]

Sound anywhere familiar?

Yes that sounds like it. Thank you!

 

[sammy]

I believe the noise has to do with the vapor leak detection system

 

[Nate4x4]

I believe the noise has to do with the vapor leak detection system

Did some more research on it, turns out It`s the fuel pump doing a pressure test and is completely normal.

Located on the read end of most newer Subaru models.

 

[Nate4x4]

2016 Subaru STI
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[sammy]

Glad we figured that out. Thank you to all who participated in this discussion.

 

[Nate4x4]

Glad we figured that out. Thank you to all who participated in this discussion.

No probs! I was glad to be of service to you.