has a lot of BMW's TIS on the internet. There's also the technical training manuals, which describe several system in detail also.
Here's what you're looking for:
https://www.newtis.info/tisv2/a/en/i01- ... 1VnXjTfWMq
Several parts of the repair procedure documents in BMW TIS expect that you did preliminary work, though it usually will link to the guide on how to do said preliminary work. In this case, the first step is a link to removing the airbag assembly. It also will have links to other helpful documents, e.g. tightening torque on the fasteners.
You may need a steering wheel puller for the final step. The instructions didn't specify. If the wheel comes off easy enough, you won't need one.