Volvo V/S90 front seats retrofit/standalone.

[kaptinkeiff]

I'm curious how you got on with this, have you continued and found a solution to get these to run? Just working on a similar project with some V60 Inscription Pro seats I have found, and struggling to get them to activate without diving into CANBUS (Yet!)

It's not that simple. When the car is unlocked and the ignition is turned on, CEM sends wake up and configuration messages to all ECUs in the comfort body CAN. Each ECU listens to  unique message ID.  Those configuration messages includes the enabled options for each ECU such as massage, seat  extension , lumber and side supports and etc. 
CEM sends those messages configuration messages every 10 to 30 seconds but the ECUs listens to those config messages only during bootup.  I guess, sending every 30 second is just a fail safe incase the ECUs restarts due to any issue. 

So, you will need an arduino card or similar to send those messages. 
I enclosed the messages from my car that has massage, extension, memory, 4 way lumber and side support seats. Even though your seats do not have some or all of them, it should wake up and you should be able control your seats. 

check this out.  https://github.com/latonita/arduino-canbus-monitor/

Hi IMAY,

Thank you - I was coming to that conclusion unfortunately, your posts both in this thread and others have been extremely valuable, so thank you! That's absolutely perfect, they're Inscription Pro seats from a V60, so I think they have everything except massage. I plan to control heating & ventilation by 5/12V as appropriate, the issue is moving the damn things!

I think this shall have to be my first foray into CAN, these are to be standalone.

Do you think firing the startup details through CAN will be enough for the seats to then work perfectly afterwards? (i.e. that after the startup details have been sent, the features will all work, including the multi-selector, movement, bolsters?) - since obviously there's no CEM/CCM to reply back to the seats to say "yes, you can now engage the booster extension"?

Totally fair if you're not sure - thanks again for the CAN communications, extremely useful!