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Residential

What to Do When Your Door Lock Stops Working

When a door lock stops working, start with simple checks like alignment, the key and batteries, then call a locksmith before forcing anything. The right fix depends on whether it is a deadbolt, latch, keyless lock or sliding door lock.

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Close-up of a front door deadbolt and keypad lock on a residential door

By Advantage Lock And Key teamPublished Updated Residential

Close-up of a front door deadbolt and keypad lock on a residential door

Start With a Calm Look

A lock that suddenly refuses to cooperate can be alarming, especially if it is your only way in or out. Before you push harder, stop and look at what is happening.

Is the key turning at all? Is the bolt moving but not reaching the strike? Is the keypad lighting up? These details point toward the cause and help a locksmith quote the job accurately if you need one.

Also think about timing. A lock that fails in the middle of the day is an inconvenience, but one that will not secure the house at night needs attention right away.

Forcing a lock that is jammed is the most common way a small problem turns into a broken key or a damaged door.

A Deadbolt That Sticks or Will Not Throw

The most common cause is misalignment. If the deadbolt works fine with the door open but sticks when the door is closed, the bolt is rubbing against the strike plate.

  • Try pulling or pushing the door slightly while turning the key.
  • Check whether the hinges are loose, which can make the door sag.
  • Look at the strike hole for paint buildup or debris.

If the key itself will not turn, the cylinder may be dirty or worn. A dry lubricant made for locks can help. When it does not, a locksmith can adjust the strike, service the cylinder or replace the deadbolt.

A Latch That Will Not Catch or Release

If the door swings open even when closed, the spring latch is not reaching the strike plate. That is often due to a door that has shifted or a strike that has moved.

If the knob turns but the latch does not retract, the internal spring or the connecting spindle may have broken. This sometimes means you cannot open the door from either side.

If you are stuck inside a room because a latch will not release, stay calm and call for help rather than kicking the door. A locksmith can open it without damaging the frame.

Both problems are common and usually repairable. A locksmith can adjust the strike or replace the knob or lever set if the internal parts have failed.

A Keyless or Smart Lock That Will Not Respond

Electronic locks most often fail because of dead or weak batteries. Replace them with fresh ones of the recommended type before anything else.

Many keypad locks have a backup key cylinder or external battery contacts for exactly this situation. Check your product manual so you know what your model offers before you need it.

If fresh batteries do not help, the motor may be struggling against a misaligned bolt, or the unit may have failed. Our residential locksmith team can diagnose keyless locks, and businesses can turn to our commercial keyless entry service.

A Sliding Door Lock That Fails

Sliding patio doors are common across Los Angeles homes, and their small latches take a beating. A latch may stop catching because the door has dropped on its rollers or the keeper has shifted.

Clean the track so the door slides freely and sits at the right height. If the latch is cracked or worn, replacement parts are usually available. Adding a secondary lock or a bar in the track is a simple way to strengthen these doors.

Do not lift or force a sliding door off its track to get in. Heavy glass panels can fall and cause injury, and reinstalling them is a two-person job at the very least.

When to Call a Locksmith

Call for help if you cannot lock the door at night, if you are locked out, or if a key breaks. A professional will use non-destructive methods where the lock allows and explain whether repair or replacement makes sense.

Our technicians explain the price before they begin any repair. For urgent problems, our emergency locksmith line is 310-819-3002. Our post on situations that need lock repair has more detail.

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Frequently asked questions

Why does my deadbolt only stick when the door is closed?

That usually means the bolt and strike plate are out of line. Adjusting the strike or tightening the hinges often fixes it. Our residential team can help.

My keypad lock is dead. How do I get in?

Many models have a backup key or external battery contacts; check the manual. If that does not work, call our emergency line for help.

Locked out or need a lock looked at?

Call 310-819-3002 to check today's availability in your part of Los Angeles.