there is some tool, but its not needed. you stick a screw driver that will fit in the 4 small holes in the back plastic on the wheel, then twist it, your unlocking a spring clip. pop one clip keep pulling up on that corner, then pop the the next one on the same side while keeping steady up pulling pressure to it dont lock down again, do the same for the other side.
then once its free lift it up slowly and look for the wires, unhook them all, the black one that goes straight into the column, you push it in, then turn it it will pop out.
unhook your battery before you do this, your taking off the airbag, you dont want a surprise.