Hello, I noticed today that I can no longer lock the car with my FFB. If I want to lock with the key and then open with a button, only the passenger door opens, but then closes directly again. Driver door does not open at all then. The FFB was retrofitted by the previous owner because the locks do not work properly. Now I have the salad. Ohso, if I want to close by a button, it clicks in the ZV pump and the turn signals also glow, more But also not. What can this be about and what can I do???Unfortunately, there is no description of the FFB. Hope you can at least help me here! Car is an MK5 convertible Bj. 92 1.8l 16V Gruss Sebastian