I'm trying to understand what happened and tried to reconstruct what happened in my case:
- van unlocked and a door open: I tried both with the sliding door and the passenger door (for me on the same side)
- locking with the remote
- close door
- then everything is locked
So: by closing with the remote, the lock of the door that is open at that moment is also engaged, hence when you close the door (possibly with keys inside and you outside) , all doors will be locked and you've locked yourself out.
I have a spare blade now, and I'm looking for a good place to hide it, but there are more or less opposing criteria for a "good" place:
- it must be relatively easy to reach for me (I mean without tools; those, if any, would be inside the van).
- it must be invisible for anyone throwing a glance underneath the van
I have the key wrapped in strong tape with a very strong magnet.
I guess it's not a good idea to ask everyone here to post his/her favourite hiding place

.