Originally Posted by GTEASER
The rental Jetta I am driving right now makes a sound similar to that, and coming from the same area, every time I go out to garage and open one of the doors. The car could be off for 12 hours and as soon as I unlock it, the noise starts and continues for several minutes. My wifes 328 makes this sound for several minutes after the car is shut off.
thats the fuel pump primming the system on a VW... the Subaru noise sounds like EVAP test running for loose gas cap