Moin colleagues, I have a little problem with my omega. -> With the search function I had little luck, so now my contribution. I had the car yesterday after 227,000km the first time to the climate check. My “old” Opel dealer said to me at the time: “If you always put out the air conditioning 15min before the end of the journey, you do not need a climate check with disinfection. And if there is too little refrigerant it shuts down anyway. Then you can still do a climate check. “This case I had now on Thursday. Yesterday (Friday) I had the car so because of too low refrigerant level at the FOH to the climate check. Climate cools again, everything is good. This morning I checked in the “cold” condition the ball valve (GM-No.: 13277003) to fill up. At the same time I could observe that air bubbles rose through the cold medium fluid standing on the valve. After a short car ride, the bubbles seemed to be mutated rather to small bubbles in the “cold” condition.