2013 Lexus GS350 Engine problems

I started my car in the morning and when I started the engine it was an instant extreme rough idle with the engine light and traction control light blinking on my dashboard and the engine cuts out on its own. I have my car at a Toyota dealership since it's closer than the Lexus dealership and they have ran an extensive testing diagnostic on my car resulting in a valve stuck open and a valve spring fell out. I have kept up the regular maintenance on my car, like every 5,000 miles fully synthetic oil changes, premium...

On july 14, 2014, I was driving at 70 miles per hour in the middle lane of a busy interstate when the engine of our lexus gs 350 unexpectedly shut down. Despite heavy traffic, I was able to pull over, without incident, into the median emergency lane where the car came to a halt. I called the dealership and was advised by the service department that it would have it towed to them. I was also informed that no loaner vehicle was available. Because I was en route to pick up family arriving soon at the airport, I...

I purchased a new lexus gs 350 2013 and it just made it over 10k miles and I have already been stranded in my house with no car 2xs. The battery has died and the car would not move. No lights were left on and on both occasions lexus said the same. Here I stand inside my house with no vehicle. From one day to another - I had no car. Its needless to say that I pay a "generous" amount of $$$$$ a month; therefore, I would have not expect this from lexus. Maybe kia. Who knows anymore. *Tr