I am not a car person by any means and am looking for some advice/help in resolving an issue where my car accessories turn back on after the car is off, leading to a dead battery.
The things I have noticed:
I always make sure the car does completely turn off (visually speaking), I wait about 10 seconds after locking the door and closing it and all the lights dim. However, I can come back 30 minutes - hour later and by looking into the car windows I can see my accessories turned back on. I can see the P (parking) light lit up on the dash, I can see the radio lit up, I can see the light under the steering wheel lit up, ect... It looks like all the "accessories"/ACC are back on.
Usually when I find the car back on, if I open the door I can hear the door ringer from it being open (as if I had left my headlights on or key in), what I found to do is put my key back in the ignition and press hardly in the "off" direction and pull it out. This usually stops it for a bit.
NOTE: My car ignition does not have a backward state either, it only moves 1 direction from the off state.
Similar to the above ^, I also found that sometimes when I get out of my car to lock it (after driving), I press the lock switch it flips to locked but then immediately flips back to unlocked. And it will keep doing this until I do the above again (put my key in - without turning it on - and just press hardly on the off direction and pull it back out).
This has been occurring for about...2/3 months now. I have paid for two full electrical checks so far, and have my startup system and battery checked 3x now as well. So far no one has found anything, and I went to large GM dealerships for all the above.
I have found no other patterns yet, been trying to find one all summer :(
From what I have read online it sounds like it may be an ignition switch. But before I dump money into a new ignition switch, I still have not found anyone talking about their ignition switching turning itself back - usually most people said the car accessories would never turn off in the first place whereas mine does turn off but then seem to turn back on.
Just want to see if there are any other suggestions/things I can try before dumping money into random stuff.
Again, I know nothing on cars - I change oil and jump a battery but that is it, so simply advice is appreciated! :)
EDIT 1 Just went out to my car for a break (been sitting for 2.5 hours), all the accessories were on usual, including outside stuff like my windshield wipers. It is probably helpful to note that my car lights don't turn on however (the external ones), the option is set to Auto for those.
FINAL UPDATE/ANSWER [2/25/2019] The issue was that the ignition switch was going bad and quietly turning over into ACC mode which turned on the radio. It has been almost 1 year since the ignition switch was replaced and I have not had this issue.