Someone disconnected your battery. You are looking at the default displays. To change them, use 2 ball point pens or toothpicks, push both the H and M buttons at the same time until you get the readings you want.

To see the online owner's manual:
http://www.volvocars.com/us/top/yourvolvo/volvo-vehicle-information-library/pages/default.aspx

Then scroll down to the bottom of the page and plug in your year, model, and which publication you want. A PDF will display, which you can save to your PC.

Klaus
--
My advice is free, so you got what you paid for...