Fitting RS6 steering wheel

Hi all.
I’ve recently acquired a RS6 flat bottomed steering wheel and wondered whether anyone knows if I disable the airbag through Vagcom before removing my current wheel will that save me having to disconnect the battery?

If not does the MMI system have a code to reactivate the radio when I reconnect the battery? I cannot find any radio code amongst any of the paperwork I got with the car.

Thanks in advance and also for all the useful info on the site.Here in the UK