Hood now working perfectly,fingers crossed,two top ups to the reservoir after several up and down sequences allowed the system to complete the cycle.Having cleaned the reservoir out, ie disconnecting from the car to do it,air got into the pipes and rams which took a while to purge.
The door locks are now playing up.I couldn't unlock with either the key or the Sigma widget.I had locked with the key but pressed the sigma widget to unlock. Ten minutes of pressing and turning the key in both locks got nowhere even though the sound effects suggested it was unlocking, when suddenly the door opened for no apparent reason.