Passenger door locks with key inside

I posted about a similar situation a couple years ago and was told it was impossible. My keys remain in my purse inside the car all of the time. I drive next door to check on my disabled daughter and turn the car off. When I come out, drivers door is locked. Fortunately, back door was not so I entered that way and reached up to unlock front door. Told my husband about it and not sure he believed me until one day we were about to leave home, me in passenger seat and he in drivers seat. Before we started the car, he forgot something and returned inside. When he came back out, his door was locked. I have driven a Prius since 2006. This has probably happened half a dozen times, Models 2006, 2010 and 2013.

 

Have your door locks been customized to do this? Mine were at the dealership, at my request.

I believe the factory default was to unlock all doors when the car is placed in Park. But this is configurable, and for security when visiting questionable areas, I selected a 'don't unlock' choice. The driver and front passenger door will unlock by simply pulling the inside handle. Rear passengers must first flip their lock off first.

How was your car customized? It can be changed.

Will the passenger door unlock from the outside by pressing the key fob unlock button twice in rapid succession? Or by hitting the electric unlock button on the driver door armrest? If not, then you have an electric or mechanical failure that ought to be repaired.

 

Yesterday I happened to have both keys with me. I left one in the car and one in pocket. When I got out of the car and try to lock it, it would not let me and made a loud steady beep. I looked on the display and it said "Key detected in car".

 

The Prius has a mind of its own and likes to mess around with us owners