If you enter a car, engine is off. The turning on is tricky, first you have to push button "2" (it's like releaseing handbrake)

wait 1 sec then push button "1". Then engine is on. (Used on Bikes, Planes, Cars, Everything.)

You have to do this only if you get inside of a parked, or a jacked car.

While you'r driving you still can turn off and on the engine whit button "1" (on), "2" (off).