Driving on the highway/freeway, received an error message on dashboard ‘stop vehicle and check power supply’. The car slowed down, max speed around 45 but thankfully my hazard lights still worked and I exited the next exit. I’ve heard I was lucky as some people with the same problem — the car gs into ‘limp’ mode and slows down to 5mph or stops completely. Very unsafe on a highway for everyone. Dealer has checked the vehicle and states it’s an ICCU problem