... what the subject line says. I'm getting a not-very-loud buzzing or whirring sound whenever the fan is in use (turn off the fan and there's no buzz). It's intermittent - sometimes it happens, sometimes it doesn't. I have the car booked with a Subaru dealer but it can't be seen for a couple of weeks and I'm wondering if there's something I should be doing in the meantime to make sure the car doesn't explode. Any advice is welcome.