Hello.  My daughter worked and saved enough money to pay cash for her first vehicle last year.  She purchased a 2007 Nissan Pathfinder LE.  Since purchasing it, we have replaced the battery twice, replaced the ignition switch, replaced two sets of chips per mechanics suggestion, and the Pathfinder continues to have issues.  Sometimes it will run fine for a week or two and then it will have a dead battery again.  Sometimes all the lights on the dash flash and go crazy.  We have had it to two garages and no one can figure out what the root of the problem is.  The battery and alternator test fine.  Any ideas?  We are ready to sell it at a huge loss because it is so unreliable.