Hopefully someone else has had these same issues, I don't know if they are some how related.

1) The Vent Fan only works on the highest setting.

2) If I turn on the A/C or Heater at first it works fine, and then after about 10 minutes of use it makes a very full loud noise, almost like something shaking very hard. It goes away immediately if I turn it off, but if I turn it on again it'll start back up. I'm seems like the car cooling down makes it go away.

 

They all could be fan related events. Take the interior air filter out and have a look around in there, maybe something got sucked in or came loose. Here's the link to a good thread: https://www.fitfreak.net/forums/fit-...placement.html