Turn steering wheel sounds like fingernails running fingernails up guitar strings

Hello, the steering wheel should be removed and the clock spring (sliding contact behind the steering wheel that provides power to steering wheel switches and horn) should be inspected for damage or additional debris. "Without having to dismantle anything" -- taking the steering wheel off is truly no big deal if someone knows what they are doing. So I'm not sure what the point was to not dismantle anything. As far as rodent intrusion - there could be other concerns there too, but visual and hands on inspection is really needed.