Myrzyn

Hi, I have a problem with the recently purchased ucf21. The air suspension does not work, after starting the car, no suspension indicator lights up, nothing happens after pressing the Norm / High button. The tech stream also doesn't see the suspension driver at all. For the time being, the car had a DIY 'suspension controller' installed which could lower and raise each wheel separately. the remote control was soldered in parallel to the installation behind the controller, I did not notice that anything was cut. you can simply turn on the compressor with one button and open the selected shock absorber valve with the other. Does anybody have an idea? The suspension ECU itself seems ok, I replaced it with another one and nothing changed. thanks for any hints.