Why a car would not start and also not give ANY response when key is turned in ignition?
What happened with me was, my car had a Remote Start system installed. It did not give any problem for several months. But, one day, when I tried to start the car manually using a key, the lights on the dashboard would come and go away in 2 seconds and any attempt to start the car by key would have no effect on car: no lights on dashboard, no engine sound, no clicking sound from Engine Starter. It would not start with Remote Start. Also, all the electrical system in the car would stop working. Workshop guy told me that the remote start circuit was wrongly installed and also remote start unit had some issues. I got the whole Remote Start system removed and things are fine since then.