Yesterday morning and this morning when leaving home for work the steering felt heavy. I tried recycling the ignition to try to restart the system but this did not work. I then waited for the engine to warm up (once I had reached a set of traffic lights in Coventry) and then attempted a restart of the engine and success! The system was fully functioning once again. I haven't checked the PAS fluid level as of yet as I thought of it as a one off yesterday morning and I have not yet had the chance either. I will pursue the issue on my own accord to determine the fault as my suspicion is that it may simply be low PAS fluid level in the system which simply just expands once the engine has warmed up. I'll let you know how I get on anyway but just wondered whether anybody else has a had a similar sort of experience or issue before? Thanks, Azeem.