Had mine do the same again just recently whilst away in the Brecon Beacons for a walking holiday - I thought it might have been the heavy rain this time, but am quickly coming to the conclusion it's just about the way you close it. I think you just need to be a bit more purposeful when you use the sliding door and not try to shut it quietly as we have been doing so as not to wake the wildlife. I've also begun to shut it without thinking about what the power latching is supposed to do and so perhaps I'm now applying a bit more momentum than when it was first new. I tried the ignition on/off again this time, which seemed that to do the trick the last time, but with no luck. Instead, I left it overnight and gave it a good close in the morning. It then started working again.