Helped a mate out fixing his boot release button.
Two problems with that:
1) It's an electrical issue.
2) The car's a french shitbox.
A wire in the loom had given way in the flexible link between door and body. No problem - there were several unused wires in the bundle, so I swapped it to one of those (I know!).
That wire was also breaked, it turned out.
Eventually used one of the knackered wires to pull a new one through.