Hi, had the same problem with my 2012 diesel. Turned out to be a front wheel bearing, garage said all faults coming from this. ECU just shuts down everything. !!! Anyway fixed the problem.

Had the same on 2012 3008, turned out to be a faulty earth lead from battery. replaced and problem solved.

Faulty aircon ?

Same fault for me, after extensive checks was found to be a faulty earth from the battery. Renewed the cable problem solved.