Moin, when preparing for the upcoming TÜV examination, I noticed a crack or rust hole behind the crumbling underbody protection. It is clear that it has to be detected or a replacement bleach in, but I will no longer be able to do that in time before the HU. The question therefore – is this a serious lack of a supporting component or does it go through? With the photos. Driver side at the back, left to the door is the damage.