Central locking lock me out

The search function unfortunately does not bring me to the target. My radio central lock no longer works. I can no longer unlock the vehicle (Ibiza BJ:200). Neither the radio remote control (which actually only uses) works, nor can I mechanically unlock with the key. Fortunately, I can open the trunk with the key. So I can at least get in/out from the trunk. If I sit inside and press the button in the door for locking/unlocking I have checked the fuses —-> all heal 2. All relays are pulled off and plugged in again —> none 3. Then I read here in the forum that it could be the ZV pump and that this should be the back right in the trunk —> so remove the carpet and look there, but I found neither on the right side, nor on the left side a ZV pump. Only the inside of the wheel box and the luf 4th car brought to the workshop today —> no error in the memory and found no error, it would have to be searched manually further. I picked up the car now first, because I can not do without it at the moment and can leave it for an indefinite time in the workshop and of course from fear of the costs that the “search” can cause. Does someone have an idea that brings me further or knows someone like me there a te il can bridge that the car at least unlocks? I prefer to have the doors open first and can not close than closed. Does the ZV run over a relay or where does the control sit for it? I can’t re-learn the radio key and the seat dealer could not do it either manually on the key or via the diagnostic device.