What is the cause of rattling noise in my Audi A6's steering wheel?

I have been experiencing a rattling noise in my Audi A6's steering wheel for the past few days. It occurs when I am turning the wheel, especially at low speeds. What could be causing this issue and how can I fix it?

The most likely cause of the rattling noise could be worn out ball joints in the steering system. It is important to get this checked and repaired as soon as possible to prevent any further damage.

Another possible cause could be loose components in the steering system, such as the tie rods or control arms. These should be inspected and tightened accordingly to resolve the issue.

It is also possible that there is a problem with the power steering pump. This can cause strange noises in the steering system and should be inspected by a mechanic to determine if it needs to be replaced.