I appear to be posting excessively for my preference. Essentially, my partner is experiencing a power steering problem that is intermittent; it manifests primarily during slow speeds and steep turns. At times, the issue persists, while at other times, it resolves itself. No codes are stored on the computer either. Her explanation is: "It indicates that there are no codes, and the warning appears when the vehicle is moving slowly and I am making a sharp turn, or when I have just started the car."
Assistance is welcomed. The vehicle is a 2010 BMW 320d Cabriolet, which I believe is equipped with electronic power steering.