Hello. I drive an Atego 818 built in 2004. The vehicle now has 95000 kilometers down, but for some time now we have some problems. 1. The vehicle sometimes loses air when the condition is switched off. And never when it is at the control station. They said that all is in order. 2. The control instrument says that is missing in 1 liter oil. Since the vehicle has no oil rod, we have filled the oil on the belief in the technology and thanks was almost a minute a star k smoke cloud. Now I have found that it indicates for example oil 1 liter, and if you then look at the water also 1 liter. If you then look at the balance container you will see that this is full. Mercedes has tested the software with the result that the vehicle has said everything in order, that worked until now and now starts again this error. Since I have lost the confidence in this workshop and a new workshop for the diagnosis a lot money taken away I wanted to ask you if you also had sorry experiences with this topic. First of all, thanks for your experiences and inspirations.