As above. Steering wheel removal, make sure you have your radio code. Disconnect the battery then go have a brew/lunch for at least 1/2 an hour till the system powers down. There should be two bolts in the back of the wheel holding the airbag on, more then likely torx head screws, undo them and gently pull the bag forward to reveal the wiring plugs, disconnect and lift out. Unplug any other plugs. Undo the large nut in the centre then REPLACE a few turns. Either grip the wheel and pull like Billy o till it comes off or forcefully hit it with the palms of your hands until it releases it limpet like grip and you'll also see why it's important to replace the nut!! Trust me, it hurts!!! Replacement is opposite of above. Tip, before removal draw a line on the threaded column stub as a reference point to help line up the new wheel.