Don't forget to turn off ALL accessories (radio, a/c, etc) prior to flashing. You don't want anything to interrupt the process. Don't even let a cellphone get near the cable during the transfer. I go so far as to close the door so the overhead light isn't on. Not trying to scare you as I've flashed 3 times with no problems. Just trying to keep you from being one of the very few that did have an issue.