Hello mate.
Mine dont work either now

it used to flick on and off if you played with the latch, now its dead!

I think the same thing caused it, leaky rear washer.
I've not heard of anyone fixing the micro switch

i dont suppose you can even buy a micro switch for it, probably a new latch is needed.

As Ant said it will show on the dash that the boot is open and a chime will sound

I did see on ebay a few weeks ago a boot latch type thing for about £25-ish (new)
Good luck with fixing it, my way is a tourch in the boot.
