For some time now, I have had the impression that the automatic air conditioning system of my S80 year 2001 is no longer cooled in the usual way so far. The compressor seems to be fine, at least the turn on and off is heard. The automatic air conditioning system also works, running at high temperatures for a very long time on a high level, just because little cold is blown out. The left side blows colder air out than the right side. Probably the right side does not cool at all. What can the problem lie in? I have been constantly in the inspectors so far. The air conditioning filters have been changed regularly, but the cooling fluid etc. certainly never changed or measured. I thank you for the hints. NS: Thank you for the previous hints: 1. The problem does not only occur in long distance, but basically and also in the short distance area. 2. I will have the cooling fluid checked soon. What can it be, however, that it cools at least a little bit further on the left, on the right side, against which it is obviously only blown normal air?