So I've read around 30+ post on this problem all similar but none exact to mine. Fan runs when car is off. Replaced coolant temp sensor tested fuses and relays.. no codes come with scan. My larger radiator fan runs for about 30 minutes and after a few days if I don't pull the relay every time I get out it will kill my battery. Done multiple other things but I'm not bringing it to the dealer. Please any suggestions on how to further diagnose would be greatly appreciated. Thanks.