Ignition-Controlled Door Locking/Unlocking

The RS3200 PLUS is programmed to automatically lock your vehicle's doors when you turn the ignition key to "ON" or "START", and unlock the doors when you turn the key back to "ACC" or "LOCK". If you start the vehicle while a door is open, the system will not lock the doors; you must lock them manually.

How the RS3200 PLUS automatically locks and unlocks the doors: 

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

This feature may be defeated by changing the system's programming. Refer to IGNITION-CONTROLLED AUTOMATIC DOOR LOCK/UNLOCK  for programming instructions.