Debris or ice from cold weather may be causing problems with the cylinder or you might simply be using the wrong key.
Inner door wont lock.
Shut the door and try to lock it.
In some cars a failed door lock actuator may lock but won t unlock or the other way around.
Slide the key in the lock and tap lightly on the key to lubricate the inside of the lock.
Forcing it could break the key in the lock.
When a push button door knob begins to fail it either needs greasing or complete replacement to fix.
If the door still does not latch properly then it could be that the strike plate is not aligning properly with the latch.
Sometimes you can clearly see the misalignment.
Tap the end of a chisel under the door stop on the striker side of the jamb.
If not do the lipstick test smear lipstick on the latch and stick masking tape to the strike plate.
The fixes are very simple if you have any suggestions for videos you w.
The lock on a push button knob is meant strictly for household privacy.
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This video shows 3 common issues that result in a door not latching or staying closed.
Step 3 align strike plate.
In some vehicles the cable that connects the door lock actuator to the inner door handle may be built into the actuator assembly.
Spray the door key with a graphite based lubricant.
If it won t lock open the door.
Exterior locks can freeze interior locks get dirty and small internal parts eventually wear out or break.
Before you buy a replacement lock try some quick remedies.
Loosen the knobs a little to relieve some of the pressure on the door and to free up the latch a little.
Put some graphite into the keyhole either by squeezing it from a tube or dusting it onto a key and then operate the lock a few times to work the graphite into the mechanism.
Often they stick or break due to excessive pressure being placed on the door.
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Try applying wd 40 or a silicone lubricant if the latch is still catching in the door.
Push button door knobs are used throughout the home as a cheap way to lock interior doors.
Key is hard to turn or won t go in the lock don t force the key.
Faulty lock the internal mechanism could be broken.
It s possible that there is an issue with the lock cylinder.