Moin. I suddenly have the problem with my V50 that the roof sky replaces itself in front of the driver and front passenger. That happened now in the heat. I always drove with air conditioning. I went through all the possibilities and now I have found that the windshield in the rain attacks immediately when the air conditioning is not on. I can not get that away without the air conditioning. I find something strange because my other cars never had the problem so. My front The windshield was replaced by Volvo in December and is also dense. Have already tested this. Dachreling is also dense. Don’t have any water stains in the sky. But what if the humidity comes from the air conditioning system? I noticed that I never have water under the car after driving with climate. So what if the drain hose is blocked? Where do I find it? And would I not have to have moisture somewhere in the footroom? What are the possible sources of error? can cause moisture to enter? Greetings, René