Hello dear forum, today I have the following problem with my V70 BJ 98: The windshield half of the passenger side is constantly slamming (when driving when it is a bit colder outside) Only when the fan blows for a longer time it goes away. Or when the Kilma system is on, but not fast. Normal is the ventilation in my operation: the outside air supply is open, fan medium on, controller of the fan unit almost up completely, air conditioning off. Fan nozzles open. When I switch on the air conditioning system, it smells a bit muffy. When it is then switched off and the car is in the sun, the disc strikes again. Rugs are dry. Otherwise there is no water in the interior. Have a sliding roof, it also seems to be dry up there. How do I get to the drain hose of the air conditioning without cutting the car or demolishing it? (if it could be due to it) Thank you for your tips. Volvo…. you say he has magical powers.