On manual cars and motorcycles, some people say put it into gear when you park,wouldnt that just stall it? Or do you shift it into 1st, clutch and brake in and then shut it off?
It's likely a sensor or switch somewhere. You don't indicate what year make of car you have, but the mass majority of cars in the last 20 years have electronic transmissions that communicate with the engine. When you change gears, the engine transmission communicate with each other, unlike older cars where the transmission simply does what you made it do. If the engine transmission aren't communicating properly, the engine won't know what to do and therefore will just shut off for your safety's sake. Don't try modifying components on your car like some here have suggested - take it to a qualified mechanic [in situations like this, it's best to leave it to the *auto manufacturer* since they know the car up one side down the other, unlike a general mechanic who is a jack of all trades -no offense as I use mechanics when where applicable] and just get ready to pay some money for a proper diagnosis and repair. The dealership will let you know what they found out, and how much it will cost to repair it. You may get lucky and find out it's just a $25 switch or sensor that has gone bad. Along with the diagnostic fee and labor, you could get out the door for under $200. In today's cars, you can't just go chopping things up yourself. You'll only make it worse. Good luck
Put the car into 1st gear with the clutch in and turn off the car, then you may release the clutch. If you want to be extra cautious pull the E-brake.
Stay away from motorized vehicles.
