If the door lock gets jammed first you should use graphite based lubricant rather than using wet lubricant.
How to fix a door lock that is jammed.
Tap the lock with a small hammer or the end of a screwdriver while you turn the key.
The basics of how to fix a door lock that is jammed in this way comes down to heat.
Use a file to widen the hole on the strike or remove the strike with a screwdriver and reposition it on the jamb.
You can heat your key or use a blow dryer to thaw the door lock.
Remove the two screws that hold the lock cylinder and pull it from the door.
You should start by spraying the lubricant simply on the door key.
Slide in the card forcefully and play with it a bit while shaking the door a bit too at the same time.
You can slide the key into the lock lightly so that the lubricant can get inside the lock properly.
Tighten the hinge screws and then try adjusting the strike plate by loosening its screws and shifting it slightly.
Then saturate the bolt mechanism with the spray lube and twist it back and forth with a flat blade screwdriver.
Remove your key from the lock and poke the tip of your flathead screwdriver in it.
Reinstall the lock cylinder and you re good to go.
If lubing the lock cylinder doesn t free it you ll need to lube the bolt mechanism photo 2.
In some cases you will have to use a de icer on your locks to resolve the problem.
If the latch does not catch close the door slowly to watch how the latch bolt meets the strike plate.
Spray 4 5 more squirts of lubricant into the lock then try unlocking it with your key again.
The first thing you can try for opening a jammed latch is to slide a plastic card e g.
This may free up the parts inside the lock and cause stuck parts to wiggle free.
This will hopefully force back the latch and the door will open.
Check the alignment of the deadbolt against the strike on the jamb if the lock is difficult to turn when the door is closed or the door doesn t lock at all.
A credit card between the door and the frame where the latch is located.
If you cannot get the lock button unstuck with simple jiggling and the door is locked have no fear you should still be able to get the door open.
If the door lock button is stuck out keeping you from pressing it in jiggling the handle and moving the door is likely to shake the jammed parts together.
Try this method several times until the dead bolt slides back into the lock.
Repairs range from making minor latch adjustments to repositioning the door.
If you exhaust the list of quick fixes and repairs to no avail you ll have to call a locksmith or replace a permanently jammed door lock.
