Hello forengemeinde! I have now also discovered leaking problems with my frontera, but found no leakage so far. On the topic of a leak test there is already a thread, whereby I still don’t know how to do it, especially for the frontera to find a suitable lid and then rebuild it. It is clear that some of the hoses do not make a good impression anymore, are partly cracked and have to be renewed, even if there is no water out there. Where do you get such hoses, which usually have a special shape, length and connection diameter? I am grateful for every tip!