Hello, at our Lupo – Rave, MKB=AUC, year of construction 2004, model year 2005 is the fuse rod, ACTE No. 6X3837177B, loose for several days. When driving, the rod pulls and makes noises. At the same time, it does not appear visible when closing up and closing, manually or via ZV. During the closing operations, the fuse rod moves up and down by about 1.5 cm. According to ACTE, at the bottom of the rod a bellows, ACTE No. 3B0837861A, sit. My question: How is the fuse rod connected to the locking unit and what function does the fold bellow have? Greeting Hans