Today when i pull in to my drive way and turn off my car i notice that my radiator fan stays on. I thought maybe the engine was kind of warm and it will shut off in a second, no such luck, well i decided to give it alittle time and eventually when i come back 10 minutes later its off. I think maybe it was just really warm or something of that nature and pass it off. Well i drive it again and turn it off and this time in never shuts off til it drains the battery and thoughts?