I have a 2009 Toyota Prius problem is the car will not start up and the dash is completely out, this occurred after I unplugged and plugged in the aux battery when I was clearing a previous code. The only thing that lights up on the dash are the hazard lights and the door open indicator. Also if the key fob is not in or near the car when pressing the ignition (on switch) it will display the missing key indicator so this tells me that the on switch is doing something. I also tried each keyfob near and in the slot. I have had a bad or weak aux battery in the past and this is not the same. The aux battery is charged and I am getting +12 volts at the fuse panel. I checked the AM2 fuse and that also has power as well as the fusible link. I also checked power at the fuses under the drivers side and the Gauge fuse has power. I checked I believe all fuses for continuity, most in and out of the car. I have the Toyota tech software but can not get it or another code reader to read any thing. I have also unplugged and plugged in the main battery and aux battery after letting it unplugged for a few days. The key fobs seem to work since they do open the doors and the lights flash. The ignition swtich / on button and dash do not light up at all no circle of green or orange, nothing. Before the dash issue I was able to read codes with the toyota software and another code reader. Any help is appreciated I tried a lot of information on this forum and elsewhere. I do not believe it is the same as other dash issues since others say their car works even thou the dash is out. Thanks for any help on this.