Hello! I’ve already read a few threads about WT, as I always had the feeling in the first moments of heating the interior that it would smell like cooling water. I can’t really detect a water loss but it can be marginal. I’m not a frequent driver now. The carpet in the driver’s footroom is damp and greasy at one point. Since I always had to deal with the various other defects on my Volvo, I have this problem a little lagged. Now I have dismantled the cladding and folded the carpet back. It is a small running track to see which starts directly where the two water pipes lead into the WT. There is this black connection to the WT, which seems to be clamped. Since I have read several times of loose screws on the pipe connection clamps, I simply pulled the one half accessible Torx (T20) screw a bit. about 1 drop per 10 seconds. I then loosened the screw a bit again (original state) and it immediately stopped dripping again. Now I drove 30km from my hall home and looked again: it doesn’t drip. Question: Can you say exactly what will be defective now? O-ring at the flange pipe WT or rather WT itself over? Should I urgently clamp a longer journey (Berlin-Hannover) over Christmas or is this probably before r semi-wild? Is a scenario conceivable in which at one stroke a connection or the WT itself become extremely leaking and I stand on the highway because 7 liters of cooling water suddenly stand in the footroom? Or is that absolutely impossible? Greeting!