Why does my Audi A5 make a strange noise when I turn the steering wheel?

I recently noticed a strange noise coming from my Audi A5 when I turn the steering wheel. It sounds like a squeaking or grinding noise. What could be causing this and how can I fix it?

The most common cause of a strange noise when turning the steering wheel is a worn out or loose belt. Check the belt for signs of wear or looseness and replace if needed.

Another possibility is that the power steering fluid is low or contaminated. Check the fluid levels and replace if needed. If the fluid appears dark or burnt, it's best to have the entire system flushed and refilled.