Hi ,
Bit of a delay here. The site refused to recognise my password, AOK now Sandra has reset me.
So, perhaps you have resolved the problems, if not, I had something the same, spurious messages, child locks US, I can't remember the others.
I took it to Stirling Audi, where I was given the runaround, car just under 3 years on the road. 9000 miles. They did put in a new alternator under a recall, and the technician suggested the problems might be the dashcam pulling the battery down. Milliamps drain overnight, yea right enough.
I thought it might be the battery, so put in a new one, whereapon all the messages disappeared, and have not returned.