[Proghound]

If it works the same as the S40/V50 series, then I believe the wiring will be there and the switches probably there behind the blanking plate on the centre console. So at that end, probably just the buttons to get, or fit another console with them on. Not sure about the actual seat pads, but I remember reading that someone on here had replaced their seat pad after it failed so I imagine it must be possible to get the parts and do it.

However I do know for sure that the heated seat option has to be installed and configured on the car's CEM for it to work. That's a dealer-only function, and there I suspect the project will fall. Unlike the trip computer in the DIM, where all the hardware already exists and they just have to apply a software package to enable it (at the cost of several hundred pounds IIRC), in this case I suspect they'd refuse to sell you the software or their labour to enable something that wasn't fitted by Volvo.