Owners/service Manual problems of the 2015 Lexus RX350

Vehicle was not locking properly. Took it to the dealership while it was still under warranty. I was told that one of the actuators was at fault, and it was repaired. About 3 months later, or 4k miles later same problem started happening again. This time, they are saying it is another actuator. At this rate, it seems like I may have to keep changing or getting new actuators. This would appear to be some sort of defect, and if the doors are not locking properly, I am afraid it could lead to some worse safety concerns. The door doesn't unlock or open accidentally. However, it doesn't lock automatically, unless it is manually locked. .

When driving uphill on a local city street, where there was a metal plate in the road, my Lexus Rx350, would detect the metal plate, and apply the pre-collision system. When I reported this issue to the dealership, they offered to shut off the pre-collision system as a work around. I was told that the system was working properly and that there was a "warning" about the potential for this to happen in the manual. I reported this issue to Lexus corporate as well. I could reproduce this issue and offered both the dealership and corporate to view the video. Both declined my offer. I am concerned for both for the future drivers of this Rx350 and those who are traveling behind who may have this Rx350 unexpectedly stop in front of them. I also asked but was not given an explanation, by either the dealership nor corporate, as to why this is not the same issue that was addressed in their recall number 15v728000, date 11/03/2015.