alright ... sorry I've got nothing to take pic with at the moment ...
I just found a pretty bad pic in my collection, that might help ... apologies for the quality though:

the switch down there is SIMILAR to:
but is labeled AUTO ON / OFF ... and some Japanese words / characters ... and the symbol of a key ...
So I believe its the feature to turn the automatic door lock on and off ...
so if it would be off, then the doors won't lock automatically
if it's on, then den doors lock once you are driving ... I know this feature from quite a few German cars ...
but what those German cars have is, once you park, switch of the engine etc ... the doors open automatically ...
that is apparently the problem with my camry ... it lock automatically but you always have to manually unlock it either by pushing each doors button or the main one in the driver's panel ...
Does this make more sense?