Automatic Lock Operation
WARNING: This page is about a different car, the 2002 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.
With the ignition key not inserted into the ignition key cylinder (unlock warning switch off) and all the doors completely closed, after pushing the button (transmitter) to unlock all the doors, if a door is not opened within 30 seconds, all the doors will be automatically relocked.