V50/S40/C30 sending custon text to DIM

[v164]

Hi
I am working on a DIY Haldex controller for my C30 AWD and would like to display some custom text in the DIM. Tried all the CAN IDs and data sending options that I could find (mostly for P2) but nothing worked. My car does not have PHM so I can't sniff the CAN to find the correct IDs and message format. Does anyone have any information about P1?

Cheers