There is a poor electrical connection supplying the systems.

The object now is to pin it down.
A tech/sharp mechanic, should be anble to isolate this problem and FIX it.
Unfortunately, there aren't that many repair people out there that enjoy chasing down an electrical problem.
This should not be difficult to find since ALL electrical power is involved. Hopefully you can find a good shop or knowledgeable person to tackle this problem.
I would not waste time and $$$ hoping just anybody will fix this. As stated earlier, there are only so many places power comes in and is sent to individual systems and this should be fairly easy to correct, just need the right person.

 

Hello!

I had also problem with something like rebooting of car electronic. Happened several times on traffic lights.

I bought a new car 6 months ago (Tucson 1.6 Turbo Gdi). So I called dealership.

They told me to first check the battery connectors and, if I don't see anything wrong, just come to their service.

I checked and the screw on the + connector wasn't tight enough. I was able to remove it from battery with my hands.

After it is tight correctly, there were no problems.

P.S: Sorry for bad English.