On a motorway run a couple weeks ago I lost PAS - the wheel became very heavy but the car was still steerable. Pulled off at the next exit and checked under the bonnet. Plenty of fluid in the reservoir and nothing else looked amiss so I resigned myself to having to get it checked out at a garage. But on restarting, all was well and has been since.
It did it again tonight, and only needed a switch off and restart while stopped at traffic lights to bring the PAS back.
It might be my imagination, but on both occasions I think I noticed a 'hot' smell in the engine compartment, but the car had been run fairly hard both times and it might just have been that.
Any ideas please?