Button Digitization

Hello, I'm planning to install a monitor in my car. However, this would require removing the buttons for the trunk, hazard lights, door lock, and city steering (Fiat Grande Punto). Is there a way to control these functions via the CAN bus? What hardware and software would I need? I already have an OBD-DIAG 4000. I hope you can help me.

Hi.
I plan to install a monitor in front of .

What kind of monitor?
However, this would require removing the buttons for the trunk, hazard lights, door lock, and city steering.
And what does the monitor have to do with it?

what hardware and software would I need
You'll probably need to convert the analog signals to CAN. To do this, you'll have to build a gateway. (This will get a bit more complicated.) I don't know what kind of knowledge or experience you have... You have experience.

Sure, here's the translation:

'lg' is a German abbreviation that stands for 'liebe Grüße,' which translates to 'best regards' or 'warm greetings' in English.