Hi Gabs,
That's the thing, no fault codes at least with the scanner my mate has. He was able to read codes and reset a couple on his hybrid. I'm thinking could it be an ABS sensor, the ABS/VSC module. Worst case it is likely to be the inverter.
So far my investigations have included removing the hybrid battery fan and cleaning and testing it, removing the inverter cooling pump, cleaning and testing it and while the pump was out, I took the opportunity to backwash the system. Nice and clean but did take some pressure to blow through, which makes me wonder if the pump is up to it.
Haven't checked the 100V system or the cruise control but all the windows are operational, in fact everything electrical bar the drive works well.
Thanks, watch this space for updates as we go.