Hello guys, on my V70 I the central lock on the tailgate has not been working for some time. When I press the ZV closes everything except the tailgate. I have to close it manually. When opening the tailgate, the tailgate is also locked. Did I lock the tailgate manually and then close the rest with the ZV so the HK is open again. Is there a control unit that is defective? What else can it be. Thanks for your help. recos1