My 2005 Prius has been acting weirdly recently. I pressed the FOB on 2 occasions and nada. Replaced the FOB battery. Same problem again. Once the alarm went off. The clock resets itself. And the fuel guage blinking meter resets itself the last few times I started the car. Also, the mileage tally in the screen has been resetting itself to "0" now too. The Prius guy at the dealership says maybe it's the aux battery since the Prius computer starts acting crazy when the battery starts going. Any thoughts would be appreciated. Also, if I replace the battery myself, do I have to disconnect anything to do with the hybrid system, or is it a regular terminal connect like in a regular car?