Natesriv
Lead Foot
Ok guys I contacted the dealer and I fixed it! You wouldn't believe this, but if your coolant is even slightly below the fill line, it can make that noise. I topped off the coolant and then some more a fraction above the fill line. Now I haven't heard the noise since then. The dealer said to make sure that my coolant is topped off and that the air should work itself out. If you look to the left of the reservoir, you'll see a pressure relief plastic "pipe" with a drain off that's built into the reservoir. Topping off the coolant worked for me, so hopefully you guys can post here and inform us of your luck with topping off!
I park on an incline too...that could be my main cause. I'll check the level tonight (if it stops raining)