Finally some pictures.

Since the dealership took apart the interior for me, I can't help with advice on that process.

This is the central locking module. It had water damage to external electrical connecters and an internal problem with corrosion on some contacts.
Almost hidden by the frame rail is a silver shape that is the alarm control module. This one had corroded connections and a broken wire from the wiring harness, but no interior damage.



After removing the wiring connectors this needs to be removed:



this is next:



And here are the goodies inside.



The pump motor would not shut off properly and I found the contacts to be dirty. They are a bit hard to see behind the green plastic bracket.