Dont know if this helps but i fixed mine a while ago, Its under the steering wheel, forgot which one (theres 2). If you can figure out which one, at the back of the boards theres a crack in one of the solders (it might take a while to find but youll see it). If you just resolder it then youre good to go.
edit:
might not be the best video or the same car but this is basically what you do