My new to me S40 has the power drivers seat but it does not have the memory buttons. I guess that was an option that the OG owner didn't want to pay for. Can I simply swap the buttons and trim, or is there more to it than that?
The whole control module on the seat is different. So no just the buttons. The module is swapped. I don’t know if the harness coming in has more wires for that button. Sure it does. So you would either have to swap out that portion of the harness which connects to something. If the wire pins are there then there might be some software.
I have an extra module in my parts bin. I’ll check later and post a pic, then you pull yours off and compare. That will at least let us know if the wire harness is there.