Owners/service Manual problems of the 2011 Lexus ES350

My tire pressure light came on in my vehicle in October. The light would not go off. I took the car to the shop and 2 sensor lights were replaced. The light stayed off for a day and came back on. The shop that replaced the sensor said to bring it back the next day because they do not know what is wrong because there are no longer any sensor to replace. When I arrived home I proceeded to back into my carport and when I proceeded to get on break to put the car in reverse, the brake failed and I had an accident that caused a lot of damage to my car. Thank god I was not physical hurt but my car was. My insurance company was contacted and vehicle was repaired. When I picked up my vehicle after paying my deductible, I was told by abra auto parts that they have replaced all the damages however the tire pressure light still will not go off and we should follow up with the Lexus dealer because that was a matter that cannot be fixed by them. I contacted the Lexus company many, many times and still have not received a clear explanation of why the light will not go off. I explained to them that I have looked at the Lexus manual and it stated that if that light remain on, the vehicle should be taken to a Lexus dealer to investigate the issue. On November 21st Lexus scheduled me to take my vehicle in to the Toyota dealer to investigate the situation. I did take the car in and to this date Lexus has not answered the question whether or not there is a defect. This is a serious matter because the lights are designed to alert you when something is wrong. Lexus may not take it serious, but I do because I never know if something is actually going on and my life could be in danger. I also received a letter regarding the air bag from Lexus. They advised do not let anyone ride on passenger side of car until we hear back from them. To this day they have not addressed that situation.