While driving in the city, I came across a red light. When the light turned green, my car’s engine shut off and the power steering turned off (unable to turn). The screen remained on but I could not start the car. This has only happened in the city when I am driving at a speed of up to 15 miles/hr. under comfort mode with the auto/stop feature on. This happened about 5 times on different dates where my car shut off but the screen was on. My car shut down in the middle of traffic, causing more traffic and an unsafe situation. Since then, I have turned off the auto/stop feature and have not yet encountered the problem again.