Power Steering/Steering Column Problem
 

Hi all,
I have an 2003 Audi A4 3.0 Avant. Recently while exiting my companies parking lot I'll have my wheel turned completely and accelerate very slowly to get out of the parking lot. When it is fully turned i hear a Hummm and a sort of buzzz until I straighten the wheel out. This only happens when the steering wheel is completely turned. Do you know what this might be? Is it normal or might i be low on steering fluid or is there a steering column problem? Thanks for all the insight.
-Derek

Any time you have a steering wheel locked either way you will hear strange noises. Does it only do this when the wheel is all the way to either direction? I would go ahead and check the fluid, make sure the car is running and don't put anything but audi fluid in it.