HI, just throwing out a question. Hope someone can help to answer. I owned a 2019 Toyota corolla altis with toyota safety sense. All my safety systems work fine. LDW, Dynamic Auto Cruise.

But the Pre Collision System seem not working.
I tried follow car very near at highway, didnt apply brake before the traffic light with the car completely stop infront of me, i also didnt apply brake, but the car didnt have any warning sign & apply brake automatically.