Can s90 seats be fitted to S60

[AnttiH31]

 If I’ve understood correctly, all seat types have the same controller but just with different software.

No, they are not.  I just compared my original s60 Momentum seat controller to the one I replaced from an s90 Inscription L (heated, ventilated, massage and side support). 
Controllers look exactly the same but there are missing pins on the s60 Momentum one. So, check yours too.

Ah, okay. So in the worst case scenario I would’nt have all of the pins in my current seat controllers. Wouldn’t this just mean that I could get all of my current controls to work + ventilation but not the side supports and massage as the pins would be missing?

Also, is there ant chance you could help me with the installation instructions in VIDA? Mainly on how to swap the airbags and how to disassemble the seat belt to get the seats in and out.