Exterior locks can freeze interior locks get dirty and small internal parts eventually wear out or break.
Inner door wont lock.
The lock on a push button knob is meant strictly for household privacy.
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.
Shut the door and try to lock it.
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.
Often they stick or break due to excessive pressure being placed on the door.
Step 3 align strike plate.
Flip the key and open the door.
This video shows 3 common issues that result in a door not latching or staying closed.
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.
In some cars a failed door lock actuator may lock but won t unlock or the other way around.
It s possible that there is an issue with the lock cylinder.
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.
In some vehicles the cable that connects the door lock actuator to the inner door handle may be built into the actuator assembly.
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Push button door knobs are used throughout the home as a cheap way to lock interior doors.
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If it won t lock open the door.
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.
When a push button door knob begins to fail it either needs greasing or complete replacement to fix.
Try applying wd 40 or a silicone lubricant if the latch is still catching in the door.
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.
Spray the door key with a graphite based lubricant.
The fixes are very simple if you have any suggestions for videos you w.