the feature of locking by going above 20kph and unlock with P gear is very good. I have no problem with that. The issue is that if the car is locked. I pull over, car is still in D and someone wants to dismount from rear or the passenger side they will not be able to pull the unlock lever at their doors and will request me to unlock the doors. In other scenario, the car is parked, in P, engine running. doors were locked through the driver side lock unlock switch, anyone from passenger side or rear seat wants to go out of car but they cant unlock their door by moving the lever on their side.
Could you check in your car if this is my car only or across the board. I think this is not good in case of emergency evacuation if the driver is incapacitated. In my corolla the unlock levers were soft and the passenger or rear occupants could unlock the doors themselves irrespective of the central locking enabled by the driver.
I must mention that the driver side lock lever works and even unlock the other doors too but the levers on the other 3 doors are jam when the car is locked.
I hope I have been able to make you understand.