Dear Doctor: I have a 2006 BMW 530xi with 56,000 miles. When it’s at a complete stop the steering wheel makes a shuttering noise when turning it. The shuddering/shaking on the steering wheel occurs more on an incline. The steering noise occurs in drive or reverse but not at driving speeds only when the car is stopped. Why? Sandy
Dear Sandy: The shuddering or shaking indicates air in the system. I have found o-rings that will leak air only, not fluid. You must use the correct power steering fluid. There are no Technical Service Bulletins on this problem.