Hello experts! On my S320 with automatic air conditioning I noticed on the weekend on 500km drive that the temperature set to 22C in the interior can not be h a l t e n. The first half hour it runs 1a and then hardly any air comes out of the ventilation…..it sounds as if somehow the ventilation runs but the air cannot blow into the interior (as if something is clogged, i.e. even with manual intervention and highest ventilation stage no more air is in motion The fan then runs on full power—only– air or wind draft is not to be felt. Only after switching to “climate off” & nomal ventilation (red diode burns)—–and then again “KLIMA AN” the system adjusts itself again. WHO would have a hint about what this might be? Thanks in advance for tips!!!