Today I accidentally discovered that after I shut the car off and remove the keys, I can still open the car windows for a limited amount of time. Eventually it will stop, but for a good amount of time I'm able to raise and lower any of the windows. I'm assuming any other ACC devices will continue to work during this period as well. No other problems with the car and since eventually the car will completely shut off power to these devices, I don't have any interior lights staying on and draining the battery.
Any ideas on what the problem can be? And how easy it is for a layperson to do?