Hello together, after some research here in the forum I have already found some entries that seem to go in the right direction, but do not fit 100 percent to my problem: In my V70 TDi Bj. 98 I have the following problem: Both when using the climate as well as the heating comes out of the right and middle nozzles fog after some time, which also smells unpleasant (vmtl frost protection?). Furthermore, a slight cooling water loss is detected and the windscreen (just right) sweats. If only the ventilation does not occur a fog. Interestingly, I was able to operate the climate always fog (and odour-free) than it was extremely hot (30°C+). Quite rarely is the Lambda lamp on me briefly, which according to another forum can be due to the defective cooling circuit. The climate evaporator has already been exchanged in the last 2 years. Are now at the same time climate evaporators and heat exchangers defective? Are there actually also 2 climate evaporators ? Apparently there are two heat exchangers. I hope you can help me further, greeting