Try charging the battery or putting a new one in it, because I don't think the electric shift models will work right with a low battery. The push button 4 wheel drive may be that way too, because it is controlled by the computer. The computer has to have a certain voltage, before everything works right. If that don't fix it, then you will need a manual to look up the codes. The light blinking 4 times is a code.
Are you sure it's not a 2003? I didn't think they made the push button 4 wheel drive until 2003, but I could be wrong.
Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!
You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.