ABS and DSTC want …

My V70 III has already been in the workshop twice because of the problem. Something is stored in the BC, but obviously it cannot be converted into understandable communication. Neither the workshop master can do anything with it, nor can one help him from sides VCG or even VCC. My dear wife feels with a vehicle that signals to her that with important safety features of the vehicle something is not quite in order, not really well. I can understand this and honestly don’t know what to think about it either. It is also unfortunate that the tempomat does not work on display either. I suspect that he simply stops operating due to lack of information from the bike. Who has already had the same or similar experiences and how could be helped? Many thanks in advance for every effort.