Russians were given advice on how to open a car lock in severe frost. Specialist Maxim Sokolov warned moisture or condensation accumulates in the car lock cylinder, which freezes and freezes.
He advised drying the lock inside - for this you can use a hairdryer or put the car in a warm box for a while. If this doesn't help, you should contact a specialist. He will disassemble the lock or, if necessary, the door itself and lubricate the mechanisms inside.