Leontine

I desperately need help and am hoping that someone in the Lexus community has had the problem I have because my car has been at the dealership for two weeks and they can't find the problem. I cannot start the car. It keeps turning and turning over but will not start. There is no reduction instrength. Three weeks ago, I put in a new battery, even knowing it was not that. Firestone tested the car and test showed no problem with starter, battery or alternator. After many hard attempts,...