Hello, I have two problems with the lock of my driver’s door: a) I can turn the key to the left and right until the normal stop – but nothing happens, it doesn’t lock anymore and when I press the button from the inside over the passenger side I can’t open the button from the outside either. B) was already the ZV at the driver’s door out of function before, started so that he immediately opened up again from time to time after the lock. For some time, the ZV on the driver’s side doesn’t go at all, but the ZV does itself, because it works from the passenger side. Does someone have a tip where to start making things? That both things have nothing to do with each other is clear to me.