Hey, I'm new to the site. Could some please tell me if I just need to do more than jump or change my battery after my wife left the key in the on position overnight (WITH ENGINE OFF) She forgot to roll up the rear windows after she shut the Jeep off but left the key in the on position now the battery is completely dead not even the clock lights up. Can Jumpstart it with another vehicle like the old days are do I need to do something else so I don't mess up the Jeeps computer? Will I need to rest the stuff like the engine warning lights? If so can I do it at home without taking it to a repair shop? I am not use to working on newer cars I've always had muscle cars and trucks from the 60's and 70's that were pretty easy to work on. But, I'm lost when it comes to the newer type engines and stuff. Thank you for any help in advance and have a great day.