What to Do When the Key Feels Stiff?
2 Answers
Drop a few drops of sewing machine oil into the keyhole, wait for about 1 minute, then insert and turn the key. You can also purchase a bottle of rust remover from the market and spray some into the keyhole to solve the problem. Industrial-grade graphite talcum powder can also be used; typically, some lock-opening companies use this to repair door lock lubrication issues.
With years of experience in car repairs, I've found that the common causes of a stiff key are dust accumulation or rust in the lock cylinder, or the key itself being clogged with dirt. A simple solution is to dip a toothpick in graphite powder from a pencil or spray some dedicated lock lubricant into the keyhole, then slowly insert the key and turn it back and forth a few times to lubricate. If this doesn't help, check if the edges of the key are worn or bent, and gently straighten them with pliers or try using a spare key. Avoid forcing the key to prevent jamming, and be careful not to push dust further in during cleaning. Remember to maintain the lock regularly—I apply a bit of lubricant to the keyhole every month to prevent oxidation and keep the entry smooth. Also, make it a habit to avoid touching the key with wet hands to reduce rust buildup. If the problem persists after lubrication, it's best to consult a professional repair shop to check for deeper damage in the lock cylinder. Following these steps usually resolves most issues, ensuring safe and convenient travel.
