Moin, on time for winter, failed the heating of my automatic air conditioning system (Limo, FL, 2,2) this afternoon. Although the blower is running, the air is cold. I have already read a little bit, and also try to reset the part with the Auto-Stop key combination without success. You can hear what is moving in the system, but even after that the air is cold, although the Motortemp. display indicates 90°. Now you read what of possibly defective operating parts for expensive money, additional pumps that can fail the service, or heat exchangers that can be blocked and whose exchange is probably a pig’s work. This sounds either expensive or expensive, so I would like to ask you for advice on how to limit the problem from cheap/fast to expensive/prolonged best. Does the thermostat also come into question or even a simple fuse? Can it be connected with this advice that this afternoon also the workshop warning light has lit up briefly? At the same time I also noticed that the mirror adjustment motors run continuously, but for that I have found the problem with regard to the mirror.