I had this thing for a week. All my previous cars had a warning buzzer if the lights were left on with ignition off and door opened. I thought this was a standard feature every car had, like wheels and a windscreen. Well seems I was wrong, this one does not. So I leave the lights on, and come back to a car with a flat battery. I am a scatterbrain and I find using this car hopeless.

On the other hand I am getting good at asking strangers to help start my car...
So the question is: is this something that can be installed on this car? How difficult and what cost? Any suggestions welcome.