Hello.
I bought some seats from a Volvo S90 2018 modell a few years ago and was looking for a solution to operate these standalone. Together with all the great minds on this forum we have a working solution.
This post has been updated with the working and final solution which have been tested and shown to work.
You should remove the airbag that is in the side of the seat to prevent any accidents from happening.
This solution is only for adjustment control of the seat.
Heat, memory, Vented seat etc is not a part of this. This is a completely seperate system (LINbus) which we have yet to be able to decode.
Note:
If you are thinking of testing this solution before putting it in the car it is important to have a PSU with a battery. If the Seat control module dips in voltage you can experience the seat to cycle on/off when running the adjustment functions.
Hardware:
What you need for the posted solution is a Lilygo ESP32 485:
https://lilygo.cc/en-us/products/t-can485?
Here you can find a neat case for the Lilygo:
https://www.printables.com/model/1251631...an485-case
Then you download Arduino, just follow the guide on:
https://github.com/Xinyuan-LilyGO/T-CAN485
Start the program in the zipped file, verify and upload to the lilygo and you are ready to go.
Wiring:
For seat control you only need 5 pins. 12V for Seat Control Module, 12V to battery saver, ground to ground, CAN high and low. (Remember to add a 120 ohm resistor on the lilygo).
I bought some seats from a Volvo S90 2018 modell a few years ago and was looking for a solution to operate these standalone. Together with all the great minds on this forum we have a working solution.
This post has been updated with the working and final solution which have been tested and shown to work.
You should remove the airbag that is in the side of the seat to prevent any accidents from happening.
This solution is only for adjustment control of the seat.
Heat, memory, Vented seat etc is not a part of this. This is a completely seperate system (LINbus) which we have yet to be able to decode.
Note:
If you are thinking of testing this solution before putting it in the car it is important to have a PSU with a battery. If the Seat control module dips in voltage you can experience the seat to cycle on/off when running the adjustment functions.
Hardware:
What you need for the posted solution is a Lilygo ESP32 485:
https://lilygo.cc/en-us/products/t-can485?
Here you can find a neat case for the Lilygo:
https://www.printables.com/model/1251631...an485-case
Then you download Arduino, just follow the guide on:
https://github.com/Xinyuan-LilyGO/T-CAN485
Start the program in the zipped file, verify and upload to the lilygo and you are ready to go.
Wiring:
For seat control you only need 5 pins. 12V for Seat Control Module, 12V to battery saver, ground to ground, CAN high and low. (Remember to add a 120 ohm resistor on the lilygo).