ACC unavailable, then loss of power.

[Antwillow]

I bought my HS PHEV about 6w ago, it was a pre registered model with 10miles on the clock. On three separate occasions, I've had a warning that ACC is unavailable, followed immediately by a HV system disconnected message, then a complete loss of power. Pulling over and restarting the engine causes the issue to disappear. Secondly, there has been one occasion of being unable to start the vehicle. Every light was on on the dash and multiple messages telling me all systems were unavailable, after an hour, the issue disappeared.

Has anybody experienced anything similar? If so, what was the cause?