Interesting. I've had these fault codes popping up sporadically on my facelift FR and did a reccy the other day to see how difficult a job this would be. I just removed the steering wheel as a matter of course as it's not really difficult and makes work in that area much easier.
I've actually noticed though that the codes (and the accompanying chime from the instrument cluster) haven't reappeared since I changed my battery a few weeks ago so I'll keep an eye on it for now.