I Had No Clue About This! My Nana’s Genius Trick for Unfreezing Frozen Car Door Locks

Winter can be magical — snowflakes, cozy sweaters, hot cocoa — but it also comes with its share of headaches. One of the worst? Discovering your car door lock is frozen solid on a freezing morning. You’re already running late, your coffee’s going cold, and your key won’t budge.

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Fortunately, my Nana has a trick that she’s used for years, and it’s so simple you’ll wonder why everyone doesn’t do it. Best of all, it takes almost zero effort and uses something you probably already have in your bag or glove box.

Why Car Door Locks Freeze

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Car door locks freeze when moisture gets inside the mechanism and temperatures drop below freezing. The trapped water turns to ice, effectively sealing the lock shut.

This moisture can come from rain, snow, sleet — or even condensation on a humid day followed by an overnight freeze. Understanding how it happens helps you take smarter preventive steps next time.

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