Total failure of steering and electrics

Hello together, I again… The relationship with my car suffers… Today the following problem. I started the car, suddenly it shows me at minus 40 degrees and beeps because of freezing ice (at 25 degrees outside temperature). Done, waiting for a few minutes. Restarted. Again this indicator, then when driving suddenly : board computer jumps into all menus, hangs up again, speed shoots up, down, high down…. Speed indicator completely failed, light fail n, Navi went on and off permanently and flickered, warning blinker without function and then steering failure. The steering was very spongy and the car reacted zero on it (very hit and he drove only minimally to the left). At the end of the song, I had to be towed off. Yesterday the rear window did not go down any more. Did dirket give me an appointment, and today that. Since this just happened, of course nobody was in the workshop anymore…. And I have no idea what d The ADAC was also surprised. He said it could be the simmering? His, maderbiss and battery excluded, well the car is only about 1 year old. Km was 12200km today. It took hold of the kia mobility guarantee. Has anyone ever had this before? And what was the problem? Thanks already, a desperate kia ceed driver.