In the past I have been caught out with a flat battery.
It shows on screen.Hybrid System not available.
Having removed the 12v battery for charging after refitting the system reboots its self.only had to reset the mirrors and seat positions.
Hi Habu.
A lot of owners are having the same problem with low milage use.
I take my Rx for a 10 mile run at least once a week to keep the 12v battery fully charged.