LEXUS QUAILTY AND WARRANTY

Good day

I have purchased my first 2015 Lexus IS350E three years ago. I was convinced to buy the vehicle due to the "quality" of the product. This past week my vehicle has failed and malfunctioned completely. Whilst I was driving every single warning light went off in my car, my brakes failed, the gas failed, the ABS failed, my life was at danger and I could have met with a serious accident whilst having my two babies in the car, age 2 and 4 years old. Every single warning light has unfortunately come up whilst I was driving. The brakes, power steering and accelerator failed and then switch on and then failed again. I have a video recording of these malfunction that has come up, "ABS failed" / " Traction failed" / " Power steering malfunction" / "Pop up hood failed" and so on. My car was taken to the dealership to have this looked at and I was completed alarmed today to be informed that my warranty was only 4 years but my maintenance plan is 7 years. Either way, this Lexus product has basically failed and after 3 days the branch is unable to source what the problem is just yet as they have never ever experienced this problem before. I loved the Lexus Product, but unfortunately after this experiencing and now having to know that the warranty is not even in place, how do I trust a Lexus product? Extremely disappointed with this product after this experiencing and it leads me to now believe that Lexus is certainly not a superior product. Thereafter, I am told that the warranty is no longer valid, yet the product itself is completely defective and unreliable product. Utterly disappoint with Lexus and the Lexus product. For a Lexus to malfunction of this level is a first for even Lexus, suggest you do a recall on your models for the safety of human life. I also do not understand why would Lexus only give their 7 year warranty plan to the newer models and not the older models in the IS350 E versions, my car is not that old anyways and for a 2015 to have to experience such a major breakdown due to the electronics and the fault cannot be found in 3 days, clearly Lexus is pointing out that they have no fait or trust in their older models and therefore they cannot offer the 7 year warranty plan as they product is not of quality in the past?