I have a 99 cherokee 4.0 and i need to know what the problems could be with it. First is when i dont have my keys in my windows, wipers, turn signals still work and my fan keeps staying on. My battery is brand new and keeps dieing even when the fan doesnt stay on, i unplug the relay on the fan and it stops. But the windows, wipers ect still kill my battery. Who can help guide me? Also i need to know how hard it is to do my heater core. I dont know to much about what these problems are. Please help asap. I have 2 kids and cant keep getting stranded with a dead battery, and i hate my kids breathing in the nasty steam and smell from the bad heater core. So i need it fixed asap. If u can help please text me at 443-907-5216 thanks

 

maybe a faulty ignition switch?