it can depend on a whole lot of things, so i recommend taking it in to the car shop to see what is wrong with it.
why wont the wip ers on a vr Holden commodore turn off, its in the off position,but they keep going ,the only way you can turn them off is turn the car off ,when you start the car they come on. you switch them off with the little hand piece on the right of the steering colume and they just keep going.
igination on car is turned off but car still runs
suspect bad fuel filter first, then fuel pump, alternator or battery, ignition module...
Either the car wont start or, it will not idle right (its going to fell like its going to turn off).
normal
Then turn it off after it is put into park
Car just shut off checked getting fuel cranks good just wont turn over
Once you get the key with the correct chip in it for your car, just turn the ignition on and leave it on until the security light quits flashing, it will take several minutes, then turn the key off and start car
Could be many things. Mostly id check the coils first as they are what cause spark.
its the starter it happened to me too i replaced and now its fine
check dimmer switch for headlights
Mine turns on while parked and wont turn off till I start it. Its a problem with the BCM. Body control module.