XC40 towbar retrofit problem

[OlegL]

Hi! I decided to install a towbar on my XC40. ..........

Programming is successful, but the towbar does not work.When you press the button, the hook does not fall out.
There is no backlight on the towbar button (the folding backrests are illuminated) and the hook indicator does not light. Can someone tell me what the problem is???

Hi

Use any available diagnostic scanner to see what errors are in the car and understand what to do next.