How to Change Which Toyota Prius HSD Doors Unlock (with Pictures)

Each time you push the lock button together with the panic button on the smart key for about 5 seconds [while outside the vehicle] with the hybrid system off, the setting for door unlocking will change as follows:
STEPS

1

SELECT THE DRIVER\'S DOOR. Driver’s door unlocking mode: If you perform smart unlocking operation on the driver’s door, it will unlock. Performing unlocking operation on the front passenger’s door or the rear hatch door will unlock all the doors. When the system switches to this mode, one long beep sounds inside the vehicle at the same time a double beep will sound three times outside the vehicle.

2

UNLOCK ALL DOORS. All doors unlocking mode: Performing smart unlocking operation on either front doors or the rear hatch will unlock all the doors. When the system switches to this mode, one long beep sounds inside the vehicle at the same time a double beep will sound two times outside the vehicle.

3

UNLOCK A SINGLE DOOR. Single door unlocking mode: The driver’s door or the rear hatch door on which you perform smart unlocking operation will unlock. However, performing unlocking operation on the front passenger’s door will unlock all the doors. When the system switches to this mode, one long beep sounds inside the vehicle at the same time a double beep will sound one time outside the vehicle.
TIPS
It is best to perform these changes while standing outside the vehicle.
This information has been edited and can be found on page 30 of the 2004 Owner's Manual.
The owner's manual of the 2008 Prius says to take your car to the dealer to change the door unlock mode, however this same procedure works on a 2008 Prius as well as a 2009 Camry Hybrid.
WARNINGS
This has not been confirmed on more recent models.
Protect yourself. If you are at all concerned with anyone gaining entry into your car from the other doors as you enter your car do not use the "All Door Unlocking Mode"