My daughter had my 2003 Prius at school and the battery died. I tried jumping but as soon as I I hooked the cables up the alarm horn started blaring. It would begin to power up when I turned the key but after a a minute it would just shut off completely. Display screen never comes on. I changed out old battery with a new one and same results. Unhooked negative cable for a few minutes but nothing. Going back in a couple days with a code reader to try and figure something out. Anyone have any suggestions?