I have just discovered 3 rust spots in my parking lot below the end pot of my Tiguan from 2017. I looked under but didn’t find anything. What can that be again? I really have the nose full of this cart. I bought the car as an annual car from VW 8 weeks ago and nothing but trouble. Defects so far: brake discs front warped dome bearings front crunchy gear front leaking tensioning roller timing belts scraped steering wheel crooked, numerous track measurements steering impact l inks higher than right What to do and how to behave towards the dealer?