my engine car not working when car is in stop position


can't find any holes that might contribute to the problem and no one seems to be able to come up with a solution

How much does the part and labor cost for this?

first time it was just sitting in the driveway with 1/4 tank of gas and started up no problems the next day...second time going through a drive thru and it happened when i was going around a corner (put it in neutral then pushed aside) then started again, once again it was 1/4 tank of gas...the most recent time i had a full tank of gas and i was driving slow in a neighborhood
i had it towed to a hyundai dealership then it started back up again and they couldn't get any codes to show up they even relearned it and after a week and $100 later they still had no answer
Any ideas?

There are a bunch of little things going on in my car:

-Power locks don't work
-Clock inside the dash board doesn't work
-The memory on the trip clock doesn't keep the information when I turn the car fully off and then back off
-I can't open the trunk without the car being turned on (the key turned in the ignition)
-The lights in the cabin don't work at all

Everything else functions pretty well. Car core functions, headlights, ac, radio, etc.

Anyone have any idea what could be the source?

Any help would be much appreciated. Thanks!

This problem coincided with the check engine light. What is the problem?

It staryed immediately after the jumping calbes were put on correct but once I turned my car off it wouldnt start again without a jump.

both rear doors,and front passenger door.door handles are broke. How hard is it to replace?