Volvo V/S90 front seats retrofit/standalone. - Working solution!

[Doormouse]

Hi Everyone - Hopefully someone can help.

I have a CX90 seat and im using the instructions/code on the lilygo ESP32 485. Can anyone confirm there is not a major difference between the s90 seat and the CX90 seat I should be aware of?




Presumably the Power, Can High, Can Low, and Wakeup are all connected properly. The Code is running and trying to send the message to the seat module.

It is however replying with

Sending wakeup frame...
Send result: FAIL
Sending wakeup frame...
Send result: FAIL
Sending wakeup frame...
Send result: FAIL

I'll try disconnecting and reconnecting everything to verify the hardware.

Any help is appreciated!