For all the OBDII compliant vehicles I've owned, I've never had one light up more than the normal "check engine light" for a loose or bad gas cap. Our 2008 Honda Odyssey even has a loose gas cap icon that will light up on the dash, along with the CEL.
Seems awfully weird to me that an AT oil temp light and all that along with the vehicle going into limp mode (no power) would happen to signify a loose gas cap. Something isn't right there. There's other stuff going on.
Brand-new car or not, the first thing I would do is get myself a basic OBDII/CAN code reader for $30 to find out what really is happening. They're more expensive in the stores, but you can mail order them for $30 from Amazon or the likes.