Car owners face a number of challenges when winter strikes. Besides dealing with vehicle damage caused by corrosion after driving on salty-snowy roads, you also have to unfreeze door locks. Frozen locks can be a pain, particularly when you need to get somewhere urgently. Usually, it becomes impossible to turn the car keys once the locks get frozen. Things get out of hand when the entire keyway gets frozen; then, you won't be able to insert the key.