For reasons far too complicated to get into, my DII has been off the road for some time, and the hail mary was a replacement ECU/BCU/GC from Paul Grant, late last year.

While everything reportedly came back together, my mechanic couldn't get it to crank. It's on my driveway now, very roughly, and I'm hoping to resurrect it.

I'm wondering if there's any de-immobiliser stuff one has to do after changing out the Great Triad?