Where is the Power Steering Fluid Resevoir on the C63 located? I went through the entire manual and didn't see any thing about it and looked under the hood and didn't see any thing that looked liked it was for the power steering fluid. I just want to check the level because this weekend a couple times at really slow speeds when I was turning the wheel I would hear a groan and I was nowhere near full lock. Thanks for the help.

In the middle. Black. Between the egr valves. Take the cover off.