Hi. You will probably find that it's the small circular spring that has broken. Available on ebay ( look for Discovery door lock spring) about £4 and easy to fit on the tailgate. Rick
Got a bit of a problem with the tailgate door on my Discovery (1997 vintage) in that the lock won't unlock on the fob. I can unlock it with the key okay though :-)
I've got the trim and all off at the moment for access to the mechanism but can't see what's wrong. The actuator lifts up when I hit the unlock button but as it relaxes again (as I understand it should) the lock mechanism falls back into the locked position.
I had a similar problem with the drivers door lock on a different Discovery some years ago and that was cured by adjusting the length of a stainless steel rod. I was kinda hoping this would be something similar but I don't see any adjustment on any of the linkages ... am I missing something?
Also, the actuator (AMR3382) is feckin' expensive (£75 from Rimmer Bros). Does my memory serve me correctly in thinking that someone like Maplins did an identical unit for a lot less - or have I completely lost the plot? I'm not (yet) convinced that the actuator is faulty but it'd be nice to know just in case :-)
Any assistance would be appreciated :-)