Not really. Water 1/3 up the side of a car door is enough to prevent someone from being able to open it.
Open the door
Don't open your car door into traffic. Use the other door.
Put luke-warm water on it. Boiling water will crack glass.
Get out of it. You'll probably have to smash the window in order to do this, as the force of water against a car door even 1/3 of the way up the door will be too much for you to be able to open the door.
open the car door with the handle
Do NOT pour hot water on a frozen car door, your window will definitely not make it! Cold window in frozen car door+hot water=broken window. Try taking your ice scraper and actually prying the door along the seal to get it to pop open.
Go in from another door and open it from the inside.
open the door
You.
you open the door and step out
AnswerBecause of the safety purposes, if a car door is opened from the outside then anyone can open the door and the passengers will have no safety and privacy.) Mona
Because the car alarm needs to be disarmed before you open the door. It's not connected to your door locks.