My 2003 ION 3 this morning suffered from power steering failure for about 10 minutes. Temperature: -12C The car is parked outside. Started the car ok and moved it down the driveway. Let it warm up (about 15 min) and turned it off. Short while later (15 min or so) I started it and noticed steering was hard and message centre displayed PWR STG message. Had to run an errand so drove the car for about 10 min with unassisted steering. After engine off for about 2 hours I started the car and found there was no steering problem. After several short trips the steering problem has not reoccurred. I hesitate to shop the car for an intermittent problem. Anyone suggest what might have happened? Is this a known issue? Thanks...Chris