[danvdr]

I've got a 2013 Outback. My "low tire pressure" warning light went on today and I found a small nail in the driver's side rear tire. I keep a plug kit and a small compressor in my car, so I took out the nail and plugged the tire. A few hours later I came back to see how the plug was doing (I had not driven the car since the plugging) and I heard a quite humming coming from the wheel well. It sounded enough like my compressor (only quieter) that I actually looked to make sure I hadn't left it plugged in and running in the car (I hadn't). I don't hear the noise inside the car and it's not coming from any of the other wheel wells.

Any thoughts?

 

[Themantogoto]

There is another thread just posted about something like this more than likely has nothing to do with the tire puncture but part of a vacuum test in the fuel system http://www.subaruoutback.org/forums...im-humming-rear-driver-side-when-car-off.html
Newer cars do a lot of random self checking while they are off even over hours it is more than likely benign especially as the car is standing still.

 

[danvdr]

Thanks for the link and the info. It didn't really sound like something "bad", but it's nice to know what it (probably) is.

 

[Themantogoto]

Thanks for the link and the info. It didn't really sound like something "bad", but it's nice to know what it (probably) is.

Better safe then sorry they say, cheers!