TIS - TOYOTA 2017-2019 86 Repair Manual (RM2760U) IMMO reg.pdf
seems that push start will work just fine! but if you want to do it with a turn key then buy a new cluster and do the above procedure. Does anyone know were we could but these clusters btw? or even the non GR ones but still have the screen? trying to get the brz part number for mine but cant seem to find it. or anyone have one to sell?
i have the resistor values and the two pins needed to add to the cluster.
if you want to use the steering wheel for the buttons you will need also the clock spring and any extra pins associated with them.