I don't lock my car at night. I live in an area where I don't lock the cars and sometimes keep the keys in them. So the computers will stay in the awake mode if the car is not locked? Has aftermarket radio in it and I have pulled the fuse to it with no change. I had the battery tested at Advanced auto and they said it was good but needed a charge. I then had Walmart take the battery out and run a test and they said it was bad and would not hold a charge so I bought a new battery yesterday. Will know if that was the issue by tomorrow.