I have the same problem, but that groaning noise seems to be the result of straining the power steering. However my AV makes a ticking/clicking sound when making hard turns, left or right, forward or reverse. At first it was only when I would have the wheel in the furthest position, but now it does it even when I'm not at the limit. Let me know what you find out, cause I'm trying to hold out till the first oil change before I take it to the dealer. Thanks