<BTW your sig sep is fect>

there is a rotating contact behind the airbag in the steering wheel to
allow the wheel to turn at the same time as maintaining a constant
connection with the electronics.  This is shorting out and blowing a
fuse, I can't remember which one, which in turn causes all of the
symptoms you mention.

To get to it undo the two hex screws at the back of the steering wheel
and *carefully* remove the airbag unit, disconnect the unit then undo
the steering wheel nut and remove the steering wheel, the rotating
contact is a black donut shaped unit.

You can either; replace the unit, dismantle it, clean it and re-assemble
it or disconnect it (red connector inside steering wheel column) and
forget about having an airbag.