Hello, I can’t explain the behavior of the i-stop system. It doesn’t display the engine at every traffic light stop, and that’s not related to a still cold engine, but happens, or does not happen, even at a long operating temperature. But what’s really annoying is that when the i-stop system waits before a red traffic light phase, the engine suddenly starts up again inexplicably, even though the pressure on the brake pedal has not changed. Since the whole thing is also connected with a small push forward, it provides every time for a small scaresecond and a further increased pressure on the brake pedal. However, the last has no effect on the system, the engine then continues to run.