I,ve been getting the old fan belt squeak/squeal for a few weeks now, and put it down to the general damp weather. The squeal mainly comes when turning the steering wheel, but yesterday it would also occur when I turned the AC on, all of which makes me think the belt is worn.
BUT...yesterday whilst peforming a three point turn, the power steering felt very stiff, not so stiff that it had completely failed though, and at full lock, the battery light, cat temp light and the oil level light came on.
Power steering fluid level was ok.
Is the pump on the way out?