Hello, I just got a 2010 Prius here in South Africa and I can't find any option for doing this in the manual as others have described. Apparently some European models don't have this option either. I have purchased carista app and the bluetooth module and it doesn't show the locking or unlocking option when the car is in movement or stopped. Just wondering if anyone else has fingured out a work around to this as I would really like to enable this. Thanks.