foreverfixing

Good evening Guys and Girls, I'm posting on behalf of my brother who owns a 2008 Sebring 2.0 petrol. He has had a problem a few times now, always at low speed such as roundabout and junction, where he dips the clutch to change gear but when he lifts the pedal, the clutch doesn't bite and the power steering goes heavy, almost as though he has stalled. The engine will still be running but for some reason the clutch won't engage or the power steering work. If he then stops the engine and restarts it it is all ok again. Could anybody shed some light on this at all? I assume the clutch is hydraulic? Does it share anything with the power steering such as hydraulic pump or pulley or belt? There are no fault lights so I would assume they are linked by a common factor. Any help would be gratefully received