Just get a new airbag, disconnect the battery, wait 10-20 minutes for the system to discharge, 2x torx screws behind the steering wheel, air bag comes loose, disconnect the yellow wire, connect new airbag, tighten 2 screws, job done. Here is a video guide to help you along your way to. Hope it helps.
[nomedia="http://www.youtube.com/watch?v=UrcnPSF66Nc&feature=youtube_gdata_player"]YouTube - ‪Land Rover Freelander Steering Wheel to an all leather upgrade‬‏[/nomedia]